[9a-N205-1~10] 13.8 Optical properties and light-emitting devices | The 86th JSAP Autumn Meeting 2025

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Oral presentation13 Semiconductors : 13.8 Optical properties and light-emitting devices

[9a-N205-1~10]13.8 Optical properties and light-emitting devices

Tue. Sep 9, 2025 9:00 AM - 11:30 AM JST
Tue. Sep 9, 2025 12:00 AM - 2:30 AM UTC

N205 (Lecture Hall North)

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)English Presentation

[9a-N205-1]High External Quantum Efficiency of 0.51% in 232 nm AlGaN-based far-UVC LED by Swapping from Heteroepitaxy to Homoepitaxy

〇(P)Muhammad Nawaz Sharif¹, Kohei Fujimoto^1,3, Arata Sasaki^1,3, Hiromitsu Sakai², Hiroyuki Yaguchi³, Muhammad Ajmal Khan¹, Hideki Hirayama¹ (1.Quantum Optodevice Labortory RIKEN Cluster for Pioneering Research, 2.Shin-Etsu Chemical Co., Ltd. Japan, 3.Saitama University)

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)English PresentationHighlighted Presentation

[9a-N205-2]Demonstration of (219–221 nm)-Band Extreme-far-UVC LEDs on c-Sapphire

〇(P)Amina Yasin¹, Yuki Nakamura¹, M. Nawaz Sharif¹, M. Ajmal Khan¹, Hideki Hirayama¹ (1.RIKEN)

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)English Presentation

[9a-N205-3]A new tri-layer Ni/Al/Au p-electrode in 281 nm UVB LED Boosted EQE to 4.6%

〇Hamida Zia^2,1, Amina Yasin², Kohei Fujimoto^1,2, Hiroyuki Yaguchi¹, M. Ajmal Khan², Hideki Hirayama² (1.Saitama University, 2.Riken)

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-N205-4]Dependence of light output on Si concentration of deep-UV LEDs with Si-doped quantum well structures

〇Marina Fujita¹, Takeuchi Tetsuya¹, Kamiyama Satoshi¹, Iwaya Motoaki¹, Ishiguro Hisanori¹, Takehisa Teppei¹, Muto Hibiki¹, Miura Sena¹, Takase Kenta¹ (1.Meijo Univ)

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[9a-N205-5]Temperature Dependence of Photoluminescence in Layered Two-Dimensional TiNCl

〇Masaru Oda¹, Taisei Ukon¹, Masashi Tanaka¹, Hisao Kondo², Aishi Yamamoto³ (1.Kyushu Inst. of Tech., 2.Ehime Univ., 3.Hiroshima Inst. of Tech.)

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[9a-N205-6]Observation of Multiple-quantum-well Polaritons by Reflectance Spectra Measurements in Organic-inorganic 2D Perovskite Film

〇Naoki Shimosako¹, Yasuhiro F. Miura², Yoshiya Akagi², Hideyuki Kunugita³, Kazuhiro Ema³ (1.Shizuoka Univ., 2.Hamamatsu Univ. School of Med., 3.Sophia Univ.)

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-N205-7]Electronic and Luminescence Properties of Novel Zero-Dimensional Li₂HfX₆ Halide Scintillators for Neutron Detection

〇(DC)Chihaya Fujiwara^1,2, Shunsuke Kurosawa^2,3,4,5, Akihiro Yamaji^2,3, Akira Yoshikawa^2,3 (1.Graduate School of Eng., Tohoku Univ., 2.IMR, Tohoku Univ., 3.NICHe, Tohoku Univ., 4.ILE Osaka Univ., 5.Institute for Integrated Radiation and Nuclear Science, Kyoto Univ.)

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-N205-8]Luminescence color tuning of colloidal silicon quantum dots dispersible in polar solvents by gel permeation chromatography

〇(M1C)Shota Sasaki¹, Nobuyoshi Koshida^1,2, Toshihiro Nakamura¹ (1.Hosei Univ., 2.Tokyo Univ. of A&T)

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[9a-N205-9]Narrow band luminescence from organic dye and silicon quantum dot hybrid thin film with Fabry–Pérot resonator

〇(M1)Daigo Michikoshi¹, Nobuyoshi Koshida^1,2, Takashi Kasahara¹, Toshihiro Nakamura¹ (1.Hosei Univ., 2.Tokyo Univ. A&T)

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-N205-10]Improvement of luminescence properties of Si quantum dot based electrogenerated chemiluminescence device using organic molecules

〇(M1C)Rikuto Tanaka¹, Nobuyoshi Koshida^1,2, Takashi Kasahara¹, Nakamura Toshihiro¹ (1.Hosei Univ., 2.Tokyo Univ.)

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