Presentation 2023

• Development of Shorter Wavelength 230 nm-Band Far-UVC LEDs and Realization of High Output Power LED Panels
  Mitsuhiro Muta, Yukihiro Oogami, Kengo Mouri, Hirokazu Kawashima, Noritoshi Maeda, Ajmal Khan, Yukio Kashima, Eriko Matsuura, Yuki Nakamura, Kou Sumishi, Taiga Kirihara, Sachie Fujikawa, Hiroyuki Yaguchi, Yasushi Iwaisako, Hideki Hirayama
  Institute of Electronics, Information and Communication Engineers, Lasers and Quantum Electronics (LQE2023-77) (Hamamatsu, Japan)
  December 1, 2023
• Realization of EQE 0.008 % operation in 221.5 nm AlGaN far UVC LED
  Yuki Nakamura, Kou Sumishi, Sachie Fujikawa, Hiroyuki Yaguchi, Akira Endoh, Hiroki Fujishiro, Yasushi Iwaisako, Hideki Hirayama
  14th International Conference on Nitride Semiconductors (OD1-3) (Fukuoka, Japan)
  November 13, 2023
• Efficiency Improvement of 225 nm Far UVC LED by Optimizing n AlGaN Buffer Layer
  Taiga Kirihara, Yukio Kashima, Hiroyuki Yaguchi, Yasushi Iwaisako, Hideki Hirayama
  14th International Conference on Nitride Semiconductors (OD6-2) (Fukuoka, Japan)
  November 15, 2023
• Efficiency Increase in 230 nm AlGaN far UVC LED by Changing Quantum Well Structure
  Yuya Nagata, Fumiya Chugenji, Noritoshi Maeda, Ajmal Khan, Sachie Fujikawa, Hiroyuki Yaguchi, Yasushi Iwaisako, Hideki Hirayama
  14th International Conference on Nitride Semiconductor (TuP-OD-15) (Fukuoka, Japan)
  November 14, 2023
• Development of naphthalimide electron transport materials as the self assembled monolayer for performance enhancements of perovskite solar cells
  Masahiro Kashiwazaki, Takashi Funaki, Kohei Yamamoto, Hiroyuki Yaguchi, and Takurou N. Murakami
  International Summit on Organic and Hybrid Photovoltaics Stability (ISOS-14) (P_15) (Yokohama, Japan)
  November 8, 2023
• (In Japanese) Self-assembled monolayers as the electron transport layers for the perovskite solar cells
  Masahiro Kashiwazaki, Takashi Funaki, Kohei Yamamoto, Naoyuki Nishimura, Hiroyuki Yaguchi, and Takurou N. Murakami
  2023 Japan Society of Colour Materials (8A06) (Osaka)
  November 8, 2023
• (In Japanese) Realization of EQE 0.008 % operation in 221.5 nm far-UVC AlGaN LED
  Yuki Nakamura, Kou Sumishi, Sachie Fujikawa, Hirouyki Yaguchi, Akira Endoh, Hiroki Fujishiro, Yasushi Iwaisako, Hideki Hirayama
  The 84th JSAP Autumn Meeting 2023 (19p-B101-3) (Kumamoto, Japan)
  September 19, 2023
• (In Japanese) Investigation of n-AlGaN layer for development of 225 nm efficient far-UVC LED
  Taiga Kirihara, Yukio Kashima, Hiroyuki Yaguchi, Yasushi Iwaisako, Hideki Hirayama
  The 84th JSAP Autumn Meeting 2023 (19p-B101-11) (Kumamoto, Japan)
  September 19, 2023
• (In Japanese) Dependence of emission efficiency of 230 nm AlGaN far-UVC LED on quantum wel
  Yuya Nagata, Fumiya Chugenji, Noritoshi Maeda, Sachie Fujikawa, Hiroyuki Yaguchi, Yasushi Iwaisako, Hideki Hirayama
  The 84th JSAP Autumn Meeting 2023 (19p-B101-12) (Kumamoto, Japan)
  September 19, 2023
• (In Japanese) A proposal of a tandem solar cell structure with intermediate band tunnel connection and verification of direct current between subcell conduction bands
  Soya Nakao, Shuhei Yagi, Yusuke Oteki, Yoshitaka Okada, Naoya Miyashita, Hiroyuki Yaguchi
  The 84th JSAP Autumn Meeting 2023 (20p-P06-1) (Kumamoto, Japan)
  September 20 ,2023
• (In Japanese) Investigation of growth conditions of InSb_1-xN_x thin films by DC sputtering method
  Sachie Fujikawa, Hiroyuki Yaguchi
  The 84th JSAP Autumn Meeting 2023 (21p-P05-10) (Kumamoto, Japan)
  September 21, 2023
• (In Japanese) Two-wavelength excited photoluminescence in Si ion-implanted n-GaN ~ Dependence on the BGE energy ~
  Hirotaka Tokuta, Norihiko Kamata, Shuhei Yagi, Hiroyuki Yaguchi
  The 84th JSAP Autumn Meeting 2023 (21p-P07-2) (Kumamoto, Japan)
  September 21, 2023
• Development of n-type self-assembled monolayers for performance enhancements of perovskite solar cells
  Masahiro Kashiwazaki, Takashi Funaki, Kohei Yamamoto, Hiroyuki Yaguchi, and Takurou N. Murakami
  6th International Conference on Perovskite Solar Cells and Optoelectronics (Oxford, UK)
  September 18, 2023
• Encompassing Tetrafluoroborate Anion into FAPbI₃ Photoabsorber Layer for Efficient and Stable Perovskite Solar Cells
  Daisuke Kubota, Hiroyuki Yaguchi, Takurou N. Murakami, and Naoyuki Nishimura
  6th International Conference on Perovskite Solar Cells and Optoelectronics (Oxford, UK)
  September 18, 2023
• Electronic structure analysis of InSb_1-xN_x alloys by first-principles calculation
  Sachie Fujikawa, Yoshitaka Fujishiro, and Hiroyuki Yaguchi
  International Conference on Crystal Growth and Epitaxy (Poster presentation-57) (Naples, Italy)
  August 3, 2023
• (In Japanese) ペロブスカイト太陽電池における光吸収層の結晶構造制御を基軸とした性能向上検討
  Daisuke Kubota, Naoyuki Nishimura, Hiroyuki Kanda, Hiroyuki Yaguchi, Takurou Murakami
  電気化学会　90周年記念講演 (Tokyo, Japan)
  June 28, 2023
• Conversion Efficiency Analysis of Tandem Solar Cells with Intermediate Band Tunnel Connection
  Shuhei Yagi and Hiroyuki Yaguchi
  50th IEEE Photovoltaic Specialists Conference (PVSC 50) (B1) (San Juan, Puerto Rico)
  June 13, 2023
• Temperature Dependence of Two-Step Photocurrent Generation in GaAsN Dilute Nitride Intermediate Band Solar Cells
  Chinami Yokokawa, Shuhei Yagi, Yasushi Shoji, Yoshitaka Okada, and Hiroyuki Yaguchi
  Compound Semiconductor Week (P1-044) (Jeju, Korea)
  May 31, 2023
• (In Japanese) Growh of thick underlaying GaN layers for orientation control of cubic InN nanowires
  Ren Ashibe, Shuhei Yagi, Hiroyuki Yaguchi
  The 70th JSAP Spring Meeting 2023 (15a-B401-4) (Tokyo, Japan)
  March 15, 2023
• (In Japanese) Study on the Binding Energy of Biexcitons Localized at Isoelectronic Traps in Nitrogen δ-Doped GaAs
  Yuko Yano, Kengo Takamiya, Sachie Fujikawa, Shuhei Yagi, Hiroyuki Yaguchi, Masataka Kobayashi, Hidefumi Akiyama
  The 70th JSAP Spring Meeting 2023 (16a-A205-6) (Tokyo, Japan)
  March 16, 2023