Peer-reviewed Papers
A. Hirano, Y. Nagasawa, M. Ippommatsu, H. Sako, A. Hashimoto, R. Sugie, Y. Honda, H. Amano, K. Kojima, and S. F. Chichibu,
"Weak metastability of AlxGa1-xN (x = 13/24, 15/24, 17/24) shown by analyzing AlGaN grown on AlN with dense macrosteps'',
Applied Physics Express 15(7), 075505 (2022).
DOI: 10.35848/1882-0786/ac79a1Y. Kajino, S. Otake, T. Yamada, K. Kojima, T. Nakamura, A. Wakamiya, Y. Kanemitsu, and Y. Yamada,
"Anti-Stokes photoluminescence from CsPbBr3 nanostructures embedded in a Cs4PbBr6 crystal'',
Phys. Rev. Materials 6, L043001 (2022).
DOI: 10.1103/PhysRevMaterials.6.L043001S. Sakai, K. Kojima, S. F. Chichibu, and A. A. Yamaguchi,
"Precise determination of deformation potentials in InGaN alloy material in semipolar and nonpolar InGaN quantum wells'',
Japanese Journal of Applied Physics 61(6), 061003 (2022).
DOI: 10.35848/1347-4065/ac62e4Y. Nagasawa, K. Kojima, A. Hirano, M. Ippommatsu, Y. Honda, H. Amano, and S. Chichibu,
"Dual-peak electroluminescence spectra generated from Aln/12Ga1-n/12N (n=2, 3, 4) for AlGaN-based LEDs with nonflat quantum wells'',
Journal of Physics D: Applied Physics 55(25), 255102 (2022).
DOI: 10.1088/1361-6463/ac5d03H. J. Austin, B. Mitchell, D. Timmerman, J. Tatebayashi, S. Ichikawa, Y. Fujiwara, and V. Dierolf,
"Modeling defect mediated color-tunability in LEDs with Eu-doped GaN-based active layers'',
Journal of Applied Physics 131(4), 045701 (2022).
DOI: 10.1063/5.0077223M. Oishi, S. Shiomi, K. Ohara, F. Fujishiro, Y. Kai, S.-J. Shih, T. Moriga, S. Chichibu, A. Takatori, and K. Kojima,
"Enhanced quantum efficiency of a self-organized silica mixed red phosphor CaAlSiN3:Eu'',
Journal of Solid State Chemistry 309, 122968 (2022).
DOI: 10.1016/j.jssc.2022.122968
Proceedings
Y. Yoshida, K. Kojima, M. Shiraiwa, A. Kanno, A. Hirano, Y. Nagasawa, M. Ippommatsu, N. Yamamoto, S. F. Chichibu, and Y. Awaji,
[Invited] "High-speed solar-blind optical wireless communication enabled by DUV LED'',
Proceedings of SPIE - The International Society for Optical Engineering PC12022, PC12022K (2022).
DOI: 10.1117/12.2608459
International Conference Papers
S. F. Chichibu, K. Shima, K. Kojima, and Y. Kangawa,
"Self-formed compositional superlattices in m-plane Al0.7In0.3N alloys on a GaN substrate triggered by atomic ordering of In and Al along the c-axis'',
International Workshop on Nitride Semiconductors 2022, PP 170, Berlin, Germany (Oct. 2022).
[Link]K. Shima, R. Tanaka, S. Takashima, K. Ueno, M. Edo, K. Kojima, A. Uedono, S. Ishibashi, and S. F. Chichibu,
"Improved minority carrier lifetime in p-type GaN segments prepared by vacancy-guided redistribution of Mg'',
International Workshop on Nitride Semiconductors 2022, AT 049, Berlin, Germany (Oct. 2022).
[Link]S. Ichikawa, K. Shiomi, T. Morikawa, Y. Sasaki, D. Timmerman, J. Tatebayashi, and Y. Fujiwara,
"Monolithically-Stacked Tri-Colored LEDs towards Micro-LED Display with Eu-doped GaN and InGaN Layers'',
International Workshop on Nitride Semiconductors 2022, AT 052, Berlin, Germany (Oct. 2022).
[Link]S. Ichikawa, Y. Fujiwara, and K. Kojima,
"Visualization of Excited-Electron Relaxation in InGaN Quantum Wells using Time-Resolved Two-Photon Photoemission Spectroscopy'',
International Workshop on Nitride Semiconductors 2022, AT 003, Berlin, Germany (Oct. 2022).
[Link]O. Maida, S. Ichikawa, and K. Kojima,
"Characterization of deep level defects in boron-doped (001) and (111) diamond films'',
The 22nd International Vacuum Congress, Wed-PO1D-1, Sapporo, Japan (Sep. 2022).
[Link]K. Kojima, S. Ichikawa, O. Maida, K. Shima, and S. Chichibu,
[Invited] "Characterization of Semiconductor Crystals Based on Omnidirectional Photoluminescence (ODPL) Spectroscopy'',
241st ECS Meeting, H01-1301, Vancouver, BC, Canada (June 2022).
[Link]S. Ichikawa, J. Tatebayashi, and Y. Fujiwara,
[Invited] "Control of macrostep structures on vicinal (0001) GaN surfaces using Eu-doped GaN interlayers'',
IWSingularity 2022/ISWGPDs 2022, S-I5, Nagoya Congress Center/Online, Japan (Jan. 2022).
[Link]A. Hirano, Y. Nagasawa, K. Kojima, M. Ippommatsu, H. Sako, A. Hashimoto, R. Sugie, Y. Honda, H. Amano, and S. F. Chichibu,
"Mechanism underlying high internal quantum efficiency of AlGaN-based LEDs fabricated on AlN with dense macrosteps'',
The 20th International Conference on Metal Organic Vapor Phase Epitaxy (ICMOVPE XX), No.Tu A3.4; LN375, Stuttgart, Germany (July 2022).
[Link]
Domestic Conference Papers
市川 修平, 藤原 康文, 小島 一信,
[invited] "Eu添加GaN赤色LEDの進展と2光子光電子分光法による表面再結合過程の直接評価の提案 ~マイクロLED素子応用に向けて~'',
Sophia Open Research Week 2022第3回半導体ナノフォトニクス研究会, ???, 上智大学 四ツ谷キャンパス (Nov. 2022).
[Link]小島 一信,
[invited] "結論はいつも塞翁が馬'',
電子材料若手交流会(ISYSE) 主催 第4回ISYSE研究会「アカデミックキャリアの多様性~大学教員って面白い!」, ???, アーバンホテル南草津 / 立命館大学びわこ・くさつキャンパス (Nov. 2022).
[Link]市川 修平, 毎田 修, 小島 一信,
"二光子光電子分光によるGaAs(110)における表面再結合寿命の評価'',
第42回ナノテスティングシンポジウム NANOTS 2022, (15), 千里ライフサイエンスセンター 豊中市 (Nov. 2022).
[Link]毎田 修, 市川 修平, 小島一信,
"ホモエピタキシャル成長ホウ素ドープダイヤモンド半導体結晶の深い欠陥準位評価'',
第42回ナノテスティングシンポジウム NANOTS 2022, (7), 千里ライフサイエンスセンター 豊中市 (Nov. 2022).
[Link]秩父 重英, 嶋 紘平, 小島 一信, 上殿 明良, 石橋 章司, 渡邉 浩崇, 田中 敦之, 本田 善央, 今西 正幸, 森 勇介, 生田目 俊秀, 色川 芳宏, 天野 浩, 小出 康夫,
"n型GaN基板・エピタキシャル薄膜の室温フォトルミネッセンス寿命'',
第83回応用物理学会秋季学術講演会, 23p-B204-9, 東北大学 川内北キャンパス (Sep. 2022).
[Link]市川 修平, 毎田 修, 小島 一信,
[Invited] "時間分解2光子光電子分光法を用いた表面再結合寿命の直接評価'',
第83回応用物理学会秋季学術講演会, 22p-B102-7, 東北大学 川内北キャンパス (Sep. 2022).
[Link]市川 修平, 小島 一信,
"時間分解二光子光電子分光法を用いたGaAs(110)における表面再結合寿命の大気暴露時間依存性の評価'',
第69回応用物理学会春季学術講演会, 26p-E104-3, ハイブリッド開催, 青山学院大学 相模原キャンパス (March 2022).
[Link]