99 27 28 29 30 31 false 34 false false AND false false false false false false false false false false K. Oikawa, M. Funato, Y. Kawakami, R. Micheletto, "Time and spatially resolved analysis of single quantum well InGaN/GaN photoluminescence blinking at multiple sample frequencies", CURRENT APPLIED PHYSICS, Vol. 79, , pp. 7-13, 2025. WOS DOI Link
Y. Matsuda, M. Funato, Y. Kawakami, "Reduction in surface defects on red-emitting InGaN quantum wells by using vicinal GaN (0001) surfaces", APPLIED PHYSICS LETTERS, Vol. 127, No. 2, 021103, 2025. WOS DOI Link
Y. Matsuda, M. Funato, Y. Kawakami, "Narrower Emission Spectra From Multicolor InGaN Quantum Wells Monolithically Integrated on Polyhedral-Shaped GaN Templates", JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY, Vol. 33, No. 10, pp. 1023-1029, 2025. WOS DOI Link
T. Nishijima, R. Ohshima, Y. Yanase, R. Ishii, M. Shiraishi, Y. Ando, "Spin Hall effect driven photocurrent in nonmagnetic single metals", PHYSICAL REVIEW B, Vol. 111, No. 14, L140406, 2025. WOS DOI Link
Z. Zhang, R. Ishii, K. Shojiki, M. Funato, K. Ohkawa, D. Iida, Y. Kawakami, "Nanoscopic structural and optical investigations on blue InGaN single quantum wells serving as layers beneath efficient red active layers", JOURNAL OF APPLIED PHYSICS, Vol. 137, No. 5, 053101, 2025. WOS REP DOI Link
Z. Zhang, R. Ishii, K. Shojiki, M. Funato, D. Iida, K. Ohkawa, Y. Kawakami, "Nanoscopic structural and emission properties of red InGaN hybrid single quantum wells", APPLIED PHYSICS LETTERS, Vol. 126, No. 24, 242104, 2025. WOS DOI Link
T. Tamano, K. Shojiki, T. Akiyama, R. Akaike, T. Nakamura, H. Honda, E. Sato, M. Uemukai, T. Tanikawa, R. Katayama, H. Miyake, "Analysis of inversion-domain boundaries in four-layer polarity-inverted AlN structure", APPLIED PHYSICS LETTERS, Vol. 126, No. 3, 032108, 2025. WOS DOI Link
S. Malik, M. Ito, H. Honda, R. Noro, K. Shojiki, H. Miyake, M. Uemukai, T. Tanikawa, R. Katayama, "Epitaxial Growth of AlGaN/AlN Strained-Layer Superlattices by Metalorganic Vapor Phase Epitaxy for Far-UV Second Harmonic Generation", CRYSTAL GROWTH & DESIGN, Vol. 25, No. 10, pp. 3266-3273, 2025. WOS DOI Link
T. Nambu, M. Yoshimura, Y. Mori, Y. Fujiwara, R. Ishii, Y. Kawakami, M. Uemukai, T. Tanikawa, R. Katayama, "199 nm vacuum-ultraviolet second harmonic generation from SrB₄O₇ vertical microcavity pumped with picosecond laser", APPLIED PHYSICS EXPRESS, Vol. 17, No. 8, 082004, 2024. WOS DOI Link
K. Tatsuoka, M. Aoki, M. Funato, R. Ohshima, Y. Ando, M. Shiraishi, "Investigation of spin-orbit torque efficiency in CuBi alloys", PHYSICAL REVIEW B, Vol. 110, No. 9, 094419, 2024. WOS DOI Link
K. Oikawa, K. Okamoto, M. Funato, Y. Kawakami, R. Micheletto, "Correlated photoluminescence blinking phenomenon on InGaN/GaN nanopillar structures", APPLIED PHYSICS LETTERS, Vol. 125, No. 24, 243501, 2024. WOS DOI Link
Y. Matsuda, H. Miyawaki, M. Funato, Y. Kawakami, "Spontaneously Integrated Multicolor InGaN Micro-Light-Emitting Diodes for Spectrum-Controllable Broadband Light Sources", PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, , , , 2024. WOS DOI Link
M. Funato, Y. Matsuda, Y. Kawakami, "A review of three-dimensional structure-controlled InGaN quantum wells for efficient visible polychromatic light emitters", SEMICONDUCTOR SCIENCE AND TECHNOLOGY, Vol. 39, No. 1, 013002, 2024. WOS DOI Link
R. Ishii, A. Yoshikawa, M. Funato, Y. Kawakami, "Deep-Ultraviolet Luminescence Properties of AlN", PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, , , , 2024. WOS DOI Link
S. Fukushige, Y. Matsuda, M. Funato, Y. Kawakami, "An Approach Toward Broader Emission Bands in Semipolar InGaN Quantum Wells on Convex Lens-Shaped GaN Microstructures via Lower-Temperature Growth", PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, , , , 2024. WOS DOI Link
S. Sato, K. Shojiki, K. Yoshida, H. Minagawa, H. Miyake, "Optical activation of implanted lanthanoid ions in aluminum nitride semiconductors by high temperature annealing", OPTICAL MATERIALS EXPRESS, Vol. 14, No. 2, 507312, 2024. WOS DOI Link
M. Funato, H. Kobayashi, Y. Kawakami, "Confinement of Excitons within GaN 1D Nanoarchitectures Formed on AlN Molecular Steps", ADVANCED OPTICAL MATERIALS, Vol. 12, No. 12, , 2024. WOS DOI Link
K. Takemura, T. Fukui, Y. Matsuda, M. Funato, Y. Kawakami, "Metal-Organic Vapor Phase Epitaxy of High-Quality GaN on Al-Pretreated Sapphire Substrates Without Using Low-Temperature Buffer Layers", PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, , , , 2024. WOS DOI Link
Y. Kame, S. Kaito, T. Matsuyama, K. Wada, M. Funato, Y. Kawakami, K. Okamoto, "High-efficiency green light emission from InGaN/GaN using localized surface plasmon resonance tuned by combination of Ag nanoparticles and dielectric thin film", OPTICS EXPRESS, Vol. 32, No. 12, pp. 21389-21399, 2024. WOS DOI Link
Z. Zhang, R. Ishii, K. Shojiki, M. Funato, D. Iida, K. Ohkawa, Y. Kawakami, "Correlative Micro-Photoluminescence Study on Hybrid Quantum-Well InGaN Red Light-Emitting Diodes", PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, , , , 2024. WOS DOI Link
R. Ishii, S. Tanaka, N. Susilo, T. Wernicke, M. Kneissl, M. Funato, Y. Kawakami, "Radiative and Nonradiative Recombination Processes in AlGaN Quantum Wells on Epitaxially Laterally Overgrown AlN/Sapphire from 10 to 500 K", PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, , , , 2024. WOS DOI Link
Y. Matsuda, R. Umemoto, M. Funato, Y. Kawakami, "Flexible topographical design of light-emitting diodes realizing electrically controllable multi-wavelength spectra", SCIENTIFIC REPORTS, Vol. 13, No. 1, 12665, 2023. WOS DOI Link
G. Namikawa, K. Shojiki, R. Yoshida, R. Kusuda, K. Uesugi, H. Miyake, "MOVPE growth of AlN and AlGaN films on N-polar annealed and sputtered AlN templates", JOURNAL OF CRYSTAL GROWTH, Vol. 617, , 127256, 2023. WOS DOI Link
Y. Matsuda, A. Sakaki, M. Funato, Y. Kawakami, "Anisotropic emission wavelength distribution of semipolar InGaN quantum wells on symmetric convex lens-shaped GaN microstructures", APPLIED PHYSICS LETTERS, Vol. 123, No. 24, 241105, 2023. WOS DOI Link
K. Shojiki, K. Uesugi, S. Xiao, H. Miyake, "Polarity control of sputter-deposited AlN with high-temperature face-to-face annealing", MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, Vol. 166, , 107736, 2023. WOS DOI Link
R. Ishii, A. Yoshikawa, M. Funato, Y. Kawakami, "Revisiting the substitutional Mg acceptor binding energy of AlN", PHYSICAL REVIEW B, Vol. 108, No. 3, 035205, 2023. WOS DOI Link
S. Kaito, T. Matsuyama, K. Wada, M. Funato, Y. Kawakami, K. Okamoto, "Enhancement of the bandgap emission from GaN epilayer by surface plasmon resonance in the quadrupole oscillation mode using Ag nanoparticles protected by an oxide thin film", APPLIED PHYSICS LETTERS, Vol. 122, No. 15, 151110, 2023. WOS DOI Link
H. Honda, S. Umeda, K. Shojiki, H. Miyake, S. Ichikawa, J. Tatebayashi, Y. Fujiwara, K. Serita, H. Murakami, M. Tonouchi, M. Uemukai, T. Tanikawa, R. Katayama, "229 nm far-ultraviolet second harmonic generation in a vertical polarity inverted AlN bilayer channel waveguide", APPLIED PHYSICS EXPRESS, Vol. 16, No. 6, 062006, 2023. WOS REP DOI Link
S. Ichikawa, M. Funato, Y. Kawakami, "Optical Anisotropy and Photopumped Lasing near 250 nm from Semipolar (1102) AlxGa1-xN/AlN Quantum Wells with Cleaved Mirrors", PHYSICAL REVIEW APPLIED, Vol. 18, No. 4, 044005, 2022. WOS DOI Link
A. Kafar, A. Sakaki, R. Ishii, K. Shojiki, S. Stanczyk, K. Gibasiewicz, G. Staszczak, L. Marona, D. Schiavon, S. Grzanka, S. Krukowski, T. Suski, P. Perlin, M. Funato, Y. Kawakami, "Structural and emission improvement of cyan-emitting InGaN quantum wells by introducing a large substrate misorientation angle", OPTICAL MATERIALS EXPRESS, Vol. 12, No. 1, pp. 119-135, 2022. WOS DOI Link
R. Ishii, T. Nagashima, R. Yamamoto, T. Hitomi, M. Funato, Y. Kawakami, "Stimulated emission mechanism of aluminum nitride", PHYSICAL REVIEW B, Vol. 105, No. 20, ARTN 205206, 2022. WOS DOI Link
M. Funato, Y. Matsuda, K. Mori-Tamamura, A.A. Yamaguchi, H. Goto, Y. Sumida, Y. Ishihara, Y. Kawakami, "Optical anisotropy of (11(2)over-bar3) semipolar InGaN quantum wells homoepitaxially grown on GaN substrates", JOURNAL OF APPLIED PHYSICS, Vol. 131, No. 7, ARTN 074502, 2022. WOS DOI Link
T. Nambu, T. Yano, S. Umeda, N. Yokoyama, H. Honda, Y. Tanaka, Y. Maegaki, Y. Mori, M. Yoshimura, S. Kobayashi, S. Ichikawa, Y. Fujiwara, R. Ishii, Y. Kawakami, M. Uemukai, T. Tanikawa, R. Katayama, "DUV coherent light emission from ultracompact microcavity wavelength conversion device", OPTICS EXPRESS, Vol. 30, No. 11, pp. 18628-18637, 2022. WOS DOI Link
S. Ichikawa, M. Funato, Y. Kawakami, "Critical layer thickness of wurtzite heterostructures with arbitrary pairs of growth planes and slip systems", SEMICONDUCTOR SCIENCE AND TECHNOLOGY, Vol. 36, No. 8, ARTN 085016, 2021. WOS DOI Link
R. Ishii, A. Yoshikawa, H. Kobayashi, M. Funato, Y. Kawakami, "Impact of the positive electron-hole exchange interaction constant on the binding energy of neutral donor bound excitons in AlN", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 60, No. 8, ARTN 080901, 2021. WOS DOI Link
R. Ishii, Y. Koyama, M. Funato, Y. Kawakami, "Microscopic origin of thermal droop in blue-emitting InGaN/GaN quantum wells studied by temperature-dependent microphotoluminescence spectroscopy", OPTICS EXPRESS, Vol. 29, No. 15, pp. 22847-22854, 2021. WOS DOI Link
Y. Matsuda, M. Funato, Y. Kawakami, "Growth evolution of polar-plane-free faceted GaN structures on (112<overbar></mml:mover>2) and (1<overbar></mml:mover><mml:mover>1<mml:mo stretchy="false"><overbar></mml:mover>2<mml:mover>2<mml:mo stretchy="false"><overbar></mml:mover>) GaN substrates", JOURNAL OF APPLIED PHYSICS, Vol. 129, No. 16, ARTN 163104, 2021. WOS DOI Link
A. Kafar, A. Sakaki, R. Ishii, S. Stanczyk, K. Gibasiewicz, Y. Matsuda, D. Schiavon, S. Grzanka, T. Suski, P. Perlin, M. Funato, Y. Kawakami, "Influence of substrate misorientation on the emission and waveguiding properties of a blue (In,Al,Ga)N laser-like structure studied by synchrotron radiation microbeam X-ray diffraction", PHOTONICS RESEARCH, Vol. 9, No. 3, pp. 299-307, 2021. WOS DOI Link
S. Ichikawa, M. Funato, Y. Kawakami, "Enhanced nonradiative recombination in AlxGa1-xN-based quantum wells thinner than the critical layer thickness determined by X-ray diffraction", APPLIED PHYSICS EXPRESS, Vol. 14, No. 3, ARTN 031007, 2021. WOS DOI Link
R. Ishii, A. Yoshikawa, K. Nagase, M. Funato, Y. Kawakami, "Bias-dependent time-resolved photoluminescence spectroscopy on 265 nm AlGaN-based LEDs on AlN substrates", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 60, No. 2, ARTN 020903, 2021. WOS DOI Link
Y. Matsuda, M. Funato, Y. Kawakami, "Doping and fabrication of polar-plane-free faceted InGaN LEDs with polychromatic emission properties on (1<overbar></mml:mover>1<mml:mo stretchy="false"><overbar></mml:mover>2<mml:mover>2<mml:mo stretchy="false"><overbar></mml:mover>) semipolar planes", JOURNAL OF APPLIED PHYSICS, Vol. 128, No. 21, ARTN 213103, 2020. WOS DOI Link
R. Ishii, A. Yoshikawa, K. Nagase, M. Funato, Y. Kawakami, "Temperature-dependent electroluminescence study on 265-nm AlGaN-based deep-ultraviolet light-emitting diodes grown on AlN substrates", AIP ADVANCES, Vol. 10, No. 12, ARTN 125014, 2020. WOS DOI Link
K. Kishimoto, M. Funato, Y. Kawakami, "Control of p-type conductivity at AlN surfaces by carbon doping", APPLIED PHYSICS EXPRESS, Vol. 13, No. 1, ARTN 015512, 2020. WOS DOI Link
R. Ishii, M. Funato, Y. Kawakami, "Long-range electron-hole exchange interaction in aluminum nitride", PHYSICAL REVIEW B, Vol. 102, No. 15, ARTN 155202, 2020. WOS DOI Link
R. Ishii, A. Yoshikawa, K. Nagase, M. Funato, Y. Kawakami, "265 nm AlGaN-based deep-ultraviolet light-emitting diodes grown on AlN substrates studied by photoluminescence spectroscopy under ideal pulsed selective and non-selective excitation conditions", APPLIED PHYSICS EXPRESS, Vol. 13, No. 10, ARTN 102005, 2020. WOS Link
K. Kishimoto, M. Funato, Y. Kawakami, "Deposition of carbon-containing hole injection layers on p-type Al0.8Ga0.2N grown by metalorganic vapor phase epitaxy", APPLIED PHYSICS LETTERS, Vol. 117, No. 6, ARTN 062101, 2020. WOS DOI Link
Y. Minami, M. Cadatal-Raduban, K. Kuroda, K. Shinohara, Y. Lai, K. Yamanoi, N. Sarukura, T. Shimizu, R. Ishii, Y. Kawakami, N. Kabasawa, T. Amano, K. Kiyohara, M. Kiyohara, "Achromatic Deep Ultraviolet Lens Using Novel Optical Materials", PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, Vol. 257, No. 8, ARTN 1900480, 2020. WOS DOI Link
A. Kafar, R. Ishii, K. Gibasiewicz, Y. Matsuda, S. Stanczyk, D. Schiavon, S. Grzanka, M. Tano, A. Sakaki, T. Suski, P. Perlin, M. Funato, Y. Kawakami, "Above 25 nm emission wavelength shift in blue-violet InGaN quantum wells induced by GaN substrate misorientation profiling: towards broad-band superluminescent diodes", OPTICS EXPRESS, Vol. 28, No. 15, pp. 22524-22539, 2020. WOS DOI Link
R. Ishii, S. Shikata, T. Teraji, H. Kanda, H. Watanabe, M. Funato, Y. Kawakami, "Intrinsic exciton transitions of isotopically purified 13C studied by photoluminescence and transmission spectroscopy", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 59, No. 1, ARTN 010903, 2020. WOS DOI Link
R. Akaike, S. Ichikawa, M. Funato, Y. Kawakami, "Lattice relaxation in semipolar AlxGa1-xN grown on (1(1)over-bar02) AlN substrates", APPLIED PHYSICS EXPRESS, Vol. 13, No. 6, ARTN 061008, 2020. WOS DOI Link
K. Kataoka, M. Funato, Y. Kawakami, "Broadband Ultraviolet Emission from 2D Arrays of AlGaN Microstructures Grown on the Patterned AlN Templates", PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, Vol. 217, No. 7, ARTN 1900764, 2020. WOS DOI Link
B. Mitchell, D. Timmerman, W. Zhu, J.Y. Lin, H.X. Jiang, J. Poplawsky, R. Ishii, Y. Kawakami, V. Dierolf, J. Tatebayashi, S. Ichikawa, Y. Fujiwara, "Direct detection of rare earth ion distributions in gallium nitride and its influence on growth morphology", JOURNAL OF APPLIED PHYSICS, Vol. 127, No. 1, ARTN 013102, 2020. WOS DOI Link
R. Ishii, R. Fukuta, F. Ishikawa, M. Matsushita, H. Ohfuji, T. Shinmei, T. Irifune, M. Funato, Y. Kawakami, "Deep-ultraviolet near band-edge emissions from nano-polycrystalline diamond", HIGH PRESSURE RESEARCH, Vol. 40, No. 1, pp. 140-147, 2020. WOS DOI Link
H. Amano, R. Collazo, C.D. Santi, S. Einfeldt, M. Funato, J. Glaab, S. Hagedorn, A. Hirano, H. Hirayama, R. Ishii, Y. Kashima, Y. Kawakami, R. Kirste, M. Kneissl, R. Martin, F. Mehnke, M. Meneghini, A. Ougazzaden, P.J. Parbrook, S. Rajan, P. Reddy, F. Roemer, J. Ruschel, B. Sarkar, F. Scholz, L.J. Schowalter, P. Shields, Z. Sitar, L. Sulmoni, T. Wang, T. Wernicke, M. Weyers, B. Witzigmann, Y. Wu, T. Wunderer, Y. Zhang, "The 2020 UV emitter roadmap", JOURNAL OF PHYSICS D-APPLIED PHYSICS, Vol. 53, No. 50, ARTN 503001, 2020. WOS DOI Link
K. Shojiki, R. Ishii, K. Uesugi, M. Funato, Y. Kawakami, H. Miyake, "Impact of face-to-face annealed sputtered AlN on the optical properties of AlGaN multiple quantum wells", AIP ADVANCES, Vol. 9, No. 12, ARTN 125342, 2019. WOS DOI Link
H. Kobayashi, S. Ichikawa, M. Funato, Y. Kawakami, "Self-Limiting Growth of Ultrathin GaN/AlN Quantum Wells for Highly Efficient Deep Ultraviolet Emitters", ADVANCED OPTICAL MATERIALS, Vol. 7, No. 21, ARTN 1900860, 2019. WOS DOI Link
S. Ichikawa, M. Funato, Y. Kawakami, "Metalorganic vapor phase epitaxy of pit-free AlN homoepitaxial films on various semipolar substrates", JOURNAL OF CRYSTAL GROWTH, Vol. 522, , pp. 68-77, 2019. WOS DOI Link
R. Ishii, M. Funato, Y. Kawakami, "Pushing the limits of deep-ultraviolet scanning near-field optical microscopy", APL PHOTONICS, Vol. 4, No. 7, p. 070801, 2019. WOS DOI Link
R. Ishii, S. Shikata, T. Teraji, H. Kanda, H. Watanabe, M. Funato, Y. Kawakami, "Isotopic effects on phonons and excitons in diamond studied by deep-ultraviolet continuous-wave photoluminescence spectroscopy", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 58, No. 1, p. 010904, 2019. WOS DOI Link
T. Ozaki, M. Funato, Y. Kawakami, "Red-emitting InxGa-xN/ln(1)(-x)Ga(1-y)N quantum wells grown on lattice-matched InyGa1-yN/ScAlMgO4(0001) templates", APPLIED PHYSICS EXPRESS, Vol. 12, No. 1, p. 011007, 2019. WOS DOI Link
M. Hayakawa, S. Ichikawa, M. Funato, Y. Kawakami, "AlxGa1-xN-Based Quantum Wells Fabricated on Macrosteps Effectively Suppressing Nonradiative Recombination", ADVANCED OPTICAL MATERIALS, Vol. 7, No. 2, p. 1801106, 2019. WOS DOI Link
K. Okamoto, K. Tateishi, K. Tamada, M. Funato, Y. Kawakami, "Micro-photoluminescence mapping of surface plasmon-coupled emission from InGaN/GaN quantum wells", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 58, No. SC, p. SCCB31, 2019. WOS DOI Link
K. Tateishi, P. Wang, S. Ryuzaki, M. Funato, Y. Kawakami, K. Okamoto, K. Tamada, "Micro-photoluminescence mapping of light emissions from aluminum-coated InGaN/GaN quantum wells", APPLIED PHYSICS EXPRESS, Vol. 12, No. 5, p. 052016, 2019. WOS DOI Link
A. Sakaki, M. Funato, M. Miyano, T. Okazaki, Y. Kawakami, "Impact of of microscopic In fluctuations on the optical properties of InxGa1-xN blue light-emitting diodes assessed by low-energy X-ray fluorescence mapping using synchrotron radiation", SCIENTIFIC REPORTS, Vol. 9, No. 1, 3733, 2019. WOS REP DOI Link
S. Ichikawa, M. Funato, Y. Kawakami, "Dominant Nonradiative Recombination Paths and Their Activation Processes in AlxGa1-xN-related Materials", PHYSICAL REVIEW APPLIED, Vol. 10, No. 6, 064027, 2018. WOS DOI Link
Y. Matsuda, M. Funato, Y. Kawakami, "Growth Mechanism of Polar-Plane-Free Faceted InGaN Quantum Wells", IEICE TRANSACTIONS ON ELECTRONICS, Vol. E101C, No. 7, pp. 532-536, 2018. WOS DOI Link
J. Ni, T. Shen, Y. Ebara, K. Koyamada, Y. Kawakami, Y. Nakamura, "Reduction of the blue light hazard by adding a cyan light LED", JOURNAL OF ADVANCED SIMULATION IN SCIENCE AND ENGINEERING, Vol. 4, No. 1, pp. 44-63, 2018. WOS DOI Link
R. Akaike, S. Ichikawa, M. Funato, Y. Kawakami, "AlxGa1-xN-based semipolar deep ultraviolet light-emitting diodes", APPLIED PHYSICS EXPRESS, Vol. 11, No. 6, p. 061001, 2018. WOS DOI Link
A. Sakaki, M. Funato, T. Kawamura, J. Araki, Y. Kawakami, "Synchrotron radiation microbeam X-ray diffraction for nondestructive assessments of local structural properties of faceted InGaN/GaN quantum wells", APPLIED PHYSICS EXPRESS, Vol. 11, No. 3, p. 031001, 2018. WOS DOI Link
K. Okamoto, M. Funato, Y. Kawakami, K. Tamada, "High-efficiency light emission by means of exciton-surface-plasmon coupling", JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, Vol. 32, , pp. 58-77, 2017. WOS DOI Link
K. Tateishi, P. Wang, S. Ryuzaki, M. Funato, Y. Kawakami, K. Okamoto, K. Tamada, "Micro-photoluminescence mapping of surface plasmon enhanced light emissions from InGaN/GaN quantum wells", APPLIED PHYSICS LETTERS, Vol. 111, No. 17, p. 172105, 2017. WOS DOI Link
T. Ozaki, M. Funato, Y. Kawakami, "Origin of temperature-induced luminescence peak shifts from semipolar (11(2)over-bar2) InxGa1-xN quantum wells", PHYSICAL REVIEW B, Vol. 96, No. 12, 125305, 2017. WOS DOI Link
K. Kataoka, M. Funato, Y. Kawakami, "Development of polychromatic ultraviolet light-emitting diodes based on three-dimensional AlGaN quantum wells", APPLIED PHYSICS EXPRESS, Vol. 10, No. 12, p. 121001, 2017. WOS DOI Link
M. Funato, S. Ichikawa, K. Kumamoto, Y. Kawakami, "Design of Al-rich AlGaN quantum well structures for efficient UV emitters", GALLIUM NITRIDE MATERIALS AND DEVICES XII, Vol. 10104, , pp. UNSP 101040I-1, 2017. WOS DOI Link
K. Okamoto, M. Funato, Y. Kawakami, N. Okada, K. Tadatomo, K. Tomada, "Plasmonics toward high efficiency LEDs from the visible to the deep UV region", LIGHT-EMITTING DIODES: MATERIALS, DEVICES, AND APPLICATIONS FOR SOLID STATE LIGHTING XXI, Vol. 10124, , p. UNSP 101240R, 2017. WOS DOI Link
T. Tsutsumi, G. Alfieri, Y. Kawakami, R. Micheletto, "The relation between photoluminescence properties and gas pressure with [0001] InGaN single quantum well systems", APPLIED SURFACE SCIENCE, Vol. 392, , pp. 256-259, 2017. WOS DOI Link
M. Funato, M. Shibaoka, Y. Kawakami, "Heteroepitaxy mechanisms of AlN on nitridated c- and a-plane sapphire substrates", JOURNAL OF APPLIED PHYSICS, Vol. 121, No. 8, p. 085304, 2017. WOS DOI Link
Y. Matsuda, M. Funato, Y. Kawakami, "Polychromatic emission from polar-plane-free faceted InGaN quantum wells with high radiative recombination probabilities", APPLIED PHYSICS EXPRESS, Vol. 10, No. 7, p. 071003, 2017. WOS DOI Link
K. Kishimoto, M. Funato, Y. Kawakami, "Effects of Al and N-2 Flow Sequences on the Interface Formation of AlN on Sapphire by EVPE", CRYSTALS, Vol. 7, No. 5, p. 123, 2017. WOS REP DOI Link
K. Kataoka, M. Funato, Y. Kawakami, "Deep-ultraviolet polychromatic emission from three-dimensionally structured AlGaN quantum wells", APPLIED PHYSICS EXPRESS, Vol. 10, No. 3, p. 031001, 2017. WOS DOI Link
M. Hayakawa, Y. Hayashi, S. Ichikawa, M. Funato, Y. Kawakami, "Enhanced radiative recombination probability in AlGaN quantum wires on (0001) vicinal surface", UV and Higher Energy Photonics: From Materials to Applications, Vol. 9926, , p. UNSP 99260S, 2016. WOS DOI Link
S. Ichikawa, M. Funato, Y. Kawakami, "Approaches to highly efficient UV emitters based on AlGaN quantum wells", GALLIUM NITRIDE MATERIALS AND DEVICES XI, Vol. 9748, , p. UNSP 97480U, 2016. WOS DOI Link
J. Nishinaka, M. Funato, R. Kido, Y. Kawakami, "InGaN/AlGaN stress compensated superlattices coherently grown on semipolar (11(2)over-bar2) GaN substrates", PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, Vol. 253, No. 1, pp. 78-83, 2016. WOS DOI Link
M. Funato, K. Matsufuji, Y. Kawakami, "Evaluating the well-to-well distribution of radiative recombination rates in semi-polar (11(2)over-bar2) InGaN multiple-quantum-well light-emitting diodes", APPLIED PHYSICS EXPRESS, Vol. 9, No. 7, p. 072102, 2016. WOS DOI Link
Y. Kawakami, A. Kaneta, A. Hashiya, M. Funato, "Impact of Radiative and Nonradiative Recombination Processes on the Efficiency-Droop Phenomenon in InxGa1-xN Single Quantum Wells Studied by Scanning Near-Field Optical Microscopy", PHYSICAL REVIEW APPLIED, Vol. 6, No. 4, 044018, 2016. WOS DOI Link
T. Kojima, S. Takano, R. Hasegawa, D. Timmerman, A. Koizumi, M. Funato, Y. Kawakami, Y. Fujiwara, "Control of GaN facet structures through Eu doping toward achieving semipolar {1(1)over-bar01} and {2(2)over-bar01} InGaN/GaN quantum wells", APPLIED PHYSICS LETTERS, Vol. 109, No. 18, p. 182101, 2016. WOS DOI Link
P. Wu, K. Kishimoto, M. Funato, Y. Kawakami, "Control of Crystal Morphologies and Interface Structures of AlN Grown on Sapphire by Elementary Source Vapor Phase Epitaxy", CRYSTAL GROWTH & DESIGN, Vol. 16, No. 11, pp. 6337-6342, 2016. WOS DOI Link
M. Funato, R.G. Banal, Y. Kawakami, "Screw dislocation-induced growth spirals as emissive exciton localization centers in Al-rich AlGaN/AlN quantum wells", AIP ADVANCES, Vol. 5, No. 11, p. 117115, 2015. WOS REP DOI Link
J. Nishinaka, M. Funato, Y. Kawakami, "Markedly distinct growth characteristics of semipolar (11(2)over-bar2) and ((1)over-bar(1)over-bar2(2)over-bar) InGaN epitaxial layers", APPLIED PHYSICS LETTERS, Vol. 106, No. 8, p. 082105, 2015. WOS DOI Link
Y. Iwata, R.G. Banal, S. Ichikawa, M. Funato, Y. Kawakami, "Emission mechanisms in Al-rich AlGaN/AlN quantum wells assessed by excitation power dependent photoluminescence spectroscopy", JOURNAL OF APPLIED PHYSICS, Vol. 117, No. 7, p. 075701, 2015. WOS DOI Link
Y. Kawakami, K. Inoue, A. Kaneta, K. Okamoto, M. Funato, "Quantification of the internal quantum efficiency in GaN via analysis of the heat generated by non-radiative recombination processes", JOURNAL OF APPLIED PHYSICS, Vol. 117, No. 10, p. 105702, 2015. WOS DOI Link
P. Wu, M. Funato, Y. Kawakami, "Environmentally friendly method to grow wide-bandgap semiconductor aluminum nitride crystals: Elementary source vapor phase epitaxy", SCIENTIFIC REPORTS, Vol. 5, , p. 17405, 2015. WOS REP DOI Link
Y. Iwata, T. Oto, D. Gachet, R.G. Banal, M. Funato, Y. Kawakami, "Co-existence of a few and sub micron inhomogeneities in Al-rich AlGaN/AlN quantum wells", JOURNAL OF APPLIED PHYSICS, Vol. 117, No. 11, p. 115702, 2015. WOS DOI Link
K. Tateishi, M. Funato, Y. Kawakami, K. Okamoto, K. Tamada, "Highly enhanced green emission from InGaN quantum wells due to surface plasmon resonance on aluminum films", APPLIED PHYSICS LETTERS, Vol. 106, No. 12, p. 121112, 2015. WOS DOI Link
K. Yamano, K. Kishino, H. Sekiguchi, T. Oto, A. Wakahara, Y. Kawakami, "Novel selective area growth (SAG) method for regularly arranged AlGaN nanocolumns using nanotemplates", JOURNAL OF CRYSTAL GROWTH, Vol. 425, , pp. 316-321, 2015. WOS DOI Link
T. Ozaki, M. Funato, Y. Kawakami, "InGaN-based visible light-emitting diodes on ScAlMgO4(0001) substrates", APPLIED PHYSICS EXPRESS, Vol. 8, No. 6, p. 062101, 2015. WOS DOI Link
S. Ichikawa, Y. Iwata, M. Funato, S. Nagata, Y. Kawakami, "High quality semipolar (1-102) AlGaN/AlN quantum wells with remarkably enhanced optical transition probabilities", APPLIED PHYSICS LETTERS, Vol. 104, , p. 252102, 2014. DOI Link
K. Kataoka, M. Yamaguchi, K. Fukushima, M. Funato, Y. Kawakami, "Multi-wavelength light emission from three-dimensional AlGaN quantum wells fabricated on facet structures", GALLIUM NITRIDE MATERIALS AND DEVICES IX, Vol. 8986, , p. 898627, 2014. WOS DOI Link
T. Ozaki, Y. Takagi, J. Nishinaka, M. Funato, Y. Kawakami, "Metalorganic vapor phase epitaxy of GaN and lattice-matched InGaN on ScAlMgO4(0001) substrates", APPLIED PHYSICS EXPRESS, Vol. 7, , p. 091001, 2014. DOI Link
T. Oto, R.G. Banal, M. Funato, Y. Kawakami, "Optical gain characteristics in Al-rich AlGaN/AlN quantum wells", APPLIED PHYSICS LETTERS, Vol. 104, No. 18, p. 181102, 2014. WOS DOI Link
M. Funato, Y. Hayashi, Y. Kawakami, "Bistable nanofacet structures on vicinal AlN(0001) surfaces", JOURNAL OF APPLIED PHYSICS, Vol. 115, No. 10, p. 103518, 2014. WOS DOI Link
R. Ishii, M. Funato, Y. Kawakami, "Effects of strong electron-hole exchange and exciton-phonon interactionson the exciton binding energy of aluminum nitride", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 53, , p. 091001, 2014. DOI Link
P.A. Favuzzi, R. Bardoux, T. Asano, Y. Kawakami, S. Noda, "In plane manipulation of a dielectric nanobeam with gradient optical forces", OPTICS EXPRESS, Vol. 21, No. 24, pp. 29129-29139, 2013. WOS DOI Link
M. Funato, Y.S. Kim, Y. Ochi, A. Kaneta, Y. Kawakami, T. Miyoshi, S. Nagahama, "Optical Gain Spectra of a (0001) InGaN Green Laser Diode", APPLIED PHYSICS EXPRESS, Vol. 6, No. 12, p. 122704, 2013. WOS DOI Link
M. Funato, Y.S. Kim, T. Hira, A. Kaneta, Y. Kawakami, T. Miyoshi, S. Nagahama, "Remarkably Suppressed Luminescence Inhomogeneity in a (0001) InGaN Green Laser Structure", APPLIED PHYSICS EXPRESS, Vol. 6, No. 11, p. 111002, 2013. WOS DOI Link
R.G. Banal, Y. Akashi, K. Matsuda, Y. Hayashi, M. Funato, Y. Kawakami, "Crack-Free Thick AlN Films Obtained by NH3 Nitridation of Sapphire Substrates", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 52, No. 8, p. UNSP 08JB21, 2013. WOS DOI Link
A. Kaneta, T. Hira, Y.S. Kim, M. Funato, Y. Kawakami, T. Miyoshi, S. Nagahama, "Local Photoluminescence Properties of InGaN Green Laser Structure on (0001) GaN Substrate", 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), , , p. 161204, 2013. WOS Link
M. Kaneko, H. Okumura, R. Ishii, M. Funato, Y. Kawakami, T. Kimoto, J. Suda, "Optical Properties of Highly Strained AlN Coherently Grown on 6H-SiC(0001)", APPLIED PHYSICS EXPRESS, Vol. 6, No. 6, p. 62604, 2013. WOS DOI Link
R. Ishii, A. Kaneta, M. Funato, Y. Kawakami, "Complete set of deformation potentials for AlN determined by reflectance spectroscopy under uniaxial stress", PHYSICAL REVIEW B, Vol. 87, No. 23, p. 235201, 2013. WOS REP DOI Link
Y. Hayashi, R.G. Banal, M. Funato, Y. Kawakami, "Heteroepitaxy between wurtzite and corundum materials", JOURNAL OF APPLIED PHYSICS, Vol. 113, No. 18, p. 183523, 2013. WOS REP DOI Link
R. Bardoux, M. Funato, A. Kaneta, Y. Kawakami, A. Kikuchi, K. Kishino, "Two-photon absorption induced anti-Stokes emission in single InGaN/GAN quantum-dot-like objects", PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, Vol. 7, No. 5, pp. 344-347, 2013. WOS DOI Link
R. Ishii, M. Funato, Y. Kawakami, "Huge electron-hole exchange interaction in aluminum nitride", PHYSICAL REVIEW B, Vol. 87, No. 16, p. 161204, 2013. WOS REP DOI Link
X. Xu, M. Funato, Y. Kawakami, K. Okamoto, K. Tamada, "Grain size dependence of surface plasmon enhanced photoluminescence", OPTICS EXPRESS, Vol. 21, No. 3, pp. 3145-3151, 2013. WOS Link
M. Funato, K. Matsuda, R.G. Banal, R. Ishii, Y. Kawakami, "Strong optical polarization in nonpolar (1(1)over-bar00) AlxGa1-xN/AlN quantum wells", PHYSICAL REVIEW B, Vol. 87, No. 4, p. 41306, 2013. WOS REP DOI Link
M. Funato, K. Matsuda, R.G. Banal, R. Ishii, Y. Kawakami, "Homoepitaxy and Photoluminescence Properties of (0001) AlN", APPLIED PHYSICS EXPRESS, Vol. 5, No. 8, pp. 082001(1)-082001(3), 2012. WOS DOI Link
P.A. Favuzzi, R. Bardoux, T. Asano, Y. Kawakami, S. Noda, "Ab-initio design of nanophotonic waveguides for tunable, bidirectional optical forces", OPTICS EXPRESS, Vol. 20, No. 22, pp. 24488-24495, 2012. WOS Link
A. Kaneta, Y.S. Kim, M. Funato, Y. Kawakami, Y. Enya, T. Kyono, M. Ueno, T. Nakamura, "Nanoscopic Photoluminescence Properties of a Green-Emitting InGaN Single Quantum Well on a {20(2)over-bar1} GaN Substrate Probed by Scanning Near-Field Optical Microscopy", APPLIED PHYSICS EXPRESS, Vol. 5, No. 10, pp. 102104(1)-102104(3), 2012. WOS DOI Link
A. Kaneta, R. Fujimoto, T. Hashimoto, K. Nishimura, M. Funato, Y. Kawakami, "Instrumentation for dual-probe scanning near-field optical microscopy", REVIEW OF SCIENTIFIC INSTRUMENTS, Vol. 83, No. 8, pp. 083709(1)-083709(11), 2012. WOS REP DOI Link
J. Nishinaka, M. Funato, Y. Kawakami, "Anisotropic lattice relaxation in non-c-plane InGaN/GaN multiple quantum wells", JOURNAL OF APPLIED PHYSICS, Vol. 112, No. 3, pp. 033513(1)-033513(9), 2012. WOS REP DOI Link
R. Bardoux, M. Funato, A. Kaneta, Y. Kawakami, A. Kikuchi, K. Kishino, "Complex strain distribution in individual facetted InGaN/GaN nano-columnar heterostructures", OPTICAL MATERIALS EXPRESS, Vol. 3, No. 1, pp. 47-53, 2012. WOS Link
M. Funato, T. Kotani, T. Kondou, Y. Kawakami, "Semipolar {n(n)over-bar01} InGaN/GaN ridge quantum wells (n=1-3) fabricated by a regrowth technique", APPLIED PHYSICS LETTERS, Vol. 100, No. 16, pp. 162107(1)-162107(4), 2012. WOS REP DOI Link
T. Suski, G. Staszczak, S.P. Lepkowski, P. Perlin, R. Czernecki, I. Grzegory, M. Funato, Y. Kawakami, "Unambiguous relationship between photoluminescence energy and its pressure evolution in InGaN/GaN quantum wells", PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, Vol. 249, No. 3, pp. 476-479, 2012. WOS DOI Link
R. Fujimoto, A. Kaneta, K. Okamoto, M. Funato, Y. Kawakami, "Interference of the surface plasmon polaritons with an Ag waveguide probed by dual-probe scanning near-field optical microscopy", APPLIED SURFACE SCIENCE, Vol. 258, No. 19, pp. 7372-7376, 2012. WOS REP DOI Link
J. Danhof, H.M. Solowan, U.T. Schwarz, A. Kaneta, Y. Kawakami, D. Schiavon, T. Meyer, M. Peter, "Lateral charge carrier diffusion in InGaN quantum wells", PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, Vol. 249, No. 3, pp. 480-484, 2012. WOS DOI Link
A. Oskooi, P.A. Favuzzi, Y. Tanaka, H. Shigeta, Y. Kawakami, S. Noda, "Partially disordered photonic-crystal thin films for enhanced and robust photovoltaics", APPLIED PHYSICS LETTERS, Vol. 100, No. 18, pp. 181110(1)-181110(4), 2012. WOS REP DOI Link
G. Staszczak, T. Suski, A. Khachapuridze, P. Perlin, M. Funato, Y. Kawakami, "Different behavior of semipolar and polar InGaN/GaN quantum wells: Pressure studies of photoluminescence", PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, Vol. 208, No. 7, pp. 1526-1528, 2011. WOS DOI Link
R.G. Banal, M. Funato, Y. Kawakami, "Extremely high internal quantum efficiencies from AlGaN/AlN quantum wells emitting in the deep ultraviolet spectral region", APPLIED PHYSICS LETTERS, Vol. 99, No. 1, pp. 011902(1)-011902(3), 2011. WOS REP DOI Link
J. Danhof, U.T. Schwarz, A. Kaneta, Y. Kawakami, "Time-of-flight measurements of charge carrier diffusion in InxGa1-xN/GaN quantum wells", PHYSICAL REVIEW B, Vol. 84, No. 3, pp. 035324(1)-035324(5), 2011. WOS REP DOI Link
K. Kojima, A.A. Yamaguchi, M. Funato, Y. Kawakami, S. Noda, "Impact of nonpolar AlGaN quantum wells on deep ultraviolet laser diodes", JOURNAL OF APPLIED PHYSICS, Vol. 110, No. 4, pp. 043115(1)-043115(7), 2011. WOS REP DOI Link
A. Oskooi, P.A. Favuzzi, Y. Kawakami, S. Noda, "Tailoring repulsive optical forces in nanophotonic waveguides", OPTICS LETTERS, Vol. 36, No. 23, pp. 4638-4640, 2011. WOS Link
R. Bardoux, A. Kaneta, M. Funato, K. Okamoto, Y. Kawakami, A. Kikuchi, K. Kishino, "Single mode emission and non-stochastic laser system based on disordered point-sized structures: toward a tuneable random laser", OPTICS EXPRESS, Vol. 19, No. 10, pp. 9262-9268, 2011. WOS Link
Y.S. Kim, A. Kaneta, M. Funato, Y. Kawakami, T. Kyono, M. Ueno, T. Nakamura, "Optical Gain Spectroscopy of a Semipolar {20(2)over-bar1}-Oriented Green InGaN Laser Diode", APPLIED PHYSICS EXPRESS, Vol. 4, No. 5, pp. 052103(1)-052103(3), 2011. WOS DOI Link
Y. Iwata, T. Oto, A. Kaneta, R.G. Banal, M. Funato, Y. Kawakami, "Time-resolved photoluminescence of Al-rich AlGaN/AlN quantum wells under selective excitation", PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 7-8, Vol. 8, No. 7-8, pp. 2191-2193, 2011. WOS DOI Link
K. Oikawa, C. Feldmeier, U.T. Schwarz, Y. Kawakami, R. Micheletto, "Real-time near-field evidence of optical blinking in the photoluminescence of InGaN by scanning near-field optical microscope", OPTICAL MATERIALS EXPRESS, Vol. 1, No. 2, pp. 158-163, 2011. WOS Link
Y. Kawakami, A. Kanai, A. Kaneta, M. Funato, A. Kikuchi, K. Kishino, "Micromirror arrays to assess luminescent nano-objects", REVIEW OF SCIENTIFIC INSTRUMENTS, Vol. 82, No. 5, pp. 053905(1)-053905(5), 2011. WOS REP DOI Link
T. Oto, R.G. Banal, M. Funato, Y. Kawakami, "Deep ultraviolet emission mechanisms in highly excited Al0.79Ga0.21N/AlN quantum wells", PHYSICA STATUS SOLIDI C, Vol. 7, No. 7-8, pp. 1909-1912, 2010. DOI Link
R.G. Banal, M. Funato, Y. Kawakami, "Characteristics of high Al-content AlGaN/AlN quantum wells fabricated by modified migration enhanced epitaxy", PHYSICA STATUS SOLIDI C, Vol. 7, No. 7-8, pp. 2111-2114, 2010. DOI Link
V. Ramesh, A. Kikuchi, K. Kishino, M. Funato, Y. Kawakami, "Strain relaxation effect by nanotexturing InGaN/GaN multiple quantum well", JOURNAL OF APPLIED PHYSICS, Vol. 107, No. 11, p. 114303/1-6, 2010. WOS REP DOI Link
Y. Kawakami, A. Kaneta, L. Su, Y. Zhu, K. Okamoto, M. Funato, A. Kikuchi, K. Kishino, "Optical properties of InGaN/GaN nanopillars fabricated by postgrowth chemically assisted ion beam etching", JOURNAL OF APPLIED PHYSICS, Vol. 107, No. 2, p. 023522/1-7, 2010. WOS REP DOI Link
M. Funato, A. Kaneta, Y. Kawakami, Y. Enya, K. Nishizuka, M. Ueno, T. Nakamura, "Weak Carrier/Exciton Localization in InGaN Quantum Wells for Green Laser Diodes Fabricated on Semi-Polar {20(2)over-bar1} GaN Substrates", APPLIED PHYSICS EXPRESS, Vol. 3, No. 2, p. 021002/1-3, 2010. WOS DOI Link
R. Ishii, A. Kaneta, M. Funato, Y. Kawakami, A.A. Yamaguchi, "All deformation potentials in GaN determined by reflectance spectroscopy under uniaxial stress: Definite breakdown of the quasicubic approximation", PHYSICAL REVIEW B, Vol. 81, No. 15, p. 155202/1-11, 2010. WOS REP DOI Link
R. Ishii, A. Kaneta, M. Funato, Y. Kawakami, "Strain-Induced Effects on the Electronic Band Structures in GaN/AlGaN Quantum Wells: Impact of Breakdown of the Quasicubic Approximation in GaN", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 49, No. 6, p. 060201/1-3, 2010. WOS DOI Link
M. Funato, D. Inoue, M. Ueda, Y. Kawakami, Y. Narukawa, T. Mukai, "Strain states in semipolar III-nitride semiconductor quantum wells", JOURNAL OF APPLIED PHYSICS, Vol. 107, No. 12, p. 123501/1-5, 2010. WOS REP DOI Link
M. Funato, M. Ueda, D. Inoue, Y. Kawakami, Y. Narukawa, T. Mukai, "Experimental and Theoretical Considerations of Polarization Field Direction in Semipolar InGaN/GaN Quantum Wells", APPLIED PHYSICS EXPRESS, Vol. 3, No. 7, p. 071001/1-3, 2010. WOS DOI Link
T. Oto, R.G. Banal, K. Kataoka, M. Funato, Y. Kawakami, "100 mW deep-ultraviolet emission from aluminium-nitride-based quantum wells pumped by an electron beam", NATURE PHOTONICS, Vol. 4, No. 11, pp. 767-771, 2010. WOS DOI Link
A. Kaneta, T. Hashimoto, K. Nishimura, M. Funato, Y. Kawakami, "Visualization of the Local Carrier Dynamics in an InGaN Quantum Well Using Dual-Probe Scanning Near-Field Optical Microscopy", APPLIED PHYSICS EXPRESS, Vol. 3, No. 10, p. 102102/1-3, 2010. WOS DOI Link
K. Kojima, A.A. Yamaguchi, M. Funato, Y. Kawakami, S. Noda, "Gain Anisotropy Analysis in Green Semipolar InGaN Quantum Wells with Inhomogeneous Broadening", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 49, No. 8, p. 081001/1-4, 2010. WOS DOI Link
R.G. BANAL, M. FUNATO, Y. KAWAKAMI, "Surface diffusion during metalorganic vapor phase epitaxy of AlN", Physica status solidi C, Vol. 6, , pp. 599-602, 2009. DOI Link
R.G. Banal, M. Funato, Y. Kawakami, "Optical anisotropy in [0001]-oriented AlxGa1-xN/AlN quantum wells (x > 0.69)", PHYSICAL REVIEW B, Vol. 79, No. 12, p. 121308, 2009. WOS REP DOI Link
R. Bardoux, A. Kaneta, M. Funato, Y. Kawakami, A. Kikuchi, K. Kishino, "Positive binding energy of a biexciton confined in a localization center formed in a single InxGa1-xN/GaN quantum disk", PHYSICAL REVIEW B, Vol. 79, No. 15, p. 155307, 2009. WOS REP DOI Link
R. Micheletto, M. Allegrini, Y. Kawakami, "Near-field evidence of local polarized emission centers in InGaN/GaN materials", APPLIED PHYSICS LETTERS, Vol. 95, No. 21, p. 211904, 2009. WOS REP DOI Link
K. Okamoto, Y. Kawakami, "High-Efficiency InGaN/GaN Light Emitters Based on Nanophotonics and Plasmonics", IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, Vol. 15, No. 4, pp. 1199-1209, 2009. WOS REP DOI Link
K. Kojima, H. Kamon, M. Funato, Y. Kawakami, "Optical Anisotropy Control of Non-c-plane InGaN Quantum Wells", JAPANESE JOURNAL OF APPLIED PHYSICS, Vol. 48, No. 8, p. 080201, 2009. WOS DOI Link
C. Feldmeier, M. Abiko, U.T. Schwarz, Y. Kawakami, R. Micheletto, "Transient memory effect in the photoluminescence of InGaN single quantum wells", OPTICS EXPRESS, Vol. 17, No. 25, pp. 22855-22860, 2009. WOS Link
R.G. Banal, M. Funato, Y. Kawakami, "Growth characteristics of AlN on sapphire substrates by modified migration-enhanced epitaxy", JOURNAL OF CRYSTAL GROWTH, Vol. 311, No. 10, pp. 2834-2836, 2009. WOS REP DOI Link
M. Ueda, M. Funato, K. Kojima, Y. Kawakami, Y. Narukawa, T. Mukai, "Polarization switching phenomena in semipolar InxGa1-xN/GaN quantum well active layers", PHYSICAL REVIEW B, Vol. 78, No. 23, p. 233303, 2008. WOS REP DOI Link
M. Funato, T. Kondou, K. Hayashi, S. Nishiura, M. Ueda, Y. Kawakami, Y. Narukawa, T. Mukai, "Monolithic polychromatic light-emitting diodes based on InGaN microfacet quantum wells toward tailor-made solid-state lighting", APPLIED PHYSICS EXPRESS, Vol. 1, No. 1, p. 011106, 2008. WOS DOI Link
M. Funato, Y. Kawakami, "Excitonic properties of polar, semipolar, and nonpolar InGaN/GaN strained quantum wells with potential fluctuations", JOURNAL OF APPLIED PHYSICS, Vol. 103, No. 9, p. 093501, 2008. WOS REP DOI Link
R. Micheletto, D. Yamada, M. Allegrini, Y. Kawakami, "A polarization-modulation method for the near-field mapping of laterally grown InGaN samples", OPTICS EXPRESS, Vol. 16, No. 10, pp. 6889-6895, 2008. WOS DOI Link
R.G. Banal, M. Funato, Y. Kawakami, "Initial nucleation of AlN grown directly on sapphire substrates by metal-organic vapor phase epitaxy", APPLIED PHYSICS LETTERS, Vol. 92, No. 24, p. 241905, 2008. WOS REP DOI Link
R. Micheletto, K. Hamamoto, T. Fujii, Y. Kawakami, "Tenfold improved sensitivity using high refractive-index substrates for surface plasmon sensing", APPLIED PHYSICS LETTERS, Vol. 93, No. 17, p. 174104, 2008. WOS REP DOI Link
J. Park, N. Suganuma, Y. Kawakami, "Dual partial dye doping for chromaticity tuning and performance enhancement of white OLEDs", JOURNAL OF DISPLAY TECHNOLOGY, Vol. 4, No. 1, pp. 61-69, 2008. WOS REP DOI Link
A. Kaneta, M. Funato, Y. Kawakami, "Nanoscopic recombination processes in InGaN/GaN quantum wells emitting violet, blue, and green spectra", PHYSICAL REVIEW B, Vol. 78, No. 12, p. 125317, 2008. WOS REP DOI Link
M. Funato, K. Hayashi, M. Ueda, Y. Kawakami, Y. Narukawa, T. Mukai, "Emission color tunable light-emitting diodes composed of InGaN multifacet quantum wells", APPLIED PHYSICS LETTERS, Vol. 93, No. 2, p. 021126, 2008. WOS REP DOI Link
K. Kojima, M. Funato, Y. Kawakami, S. Masui, S. Nagahama, T. Mukai, "Stimulated emission at 474 nm from an InGaN laser diode structure grown on a (11(2)over-bar2) GaN substrate", APPLIED PHYSICS LETTERS, Vol. 91, No. 25, p. 251107, 2007. WOS REP DOI Link