Suppression of c-plane emission in GaInN/GaN multiquantum shells/nanowires for efficient LEDs

Sae Katsuro; Weifang Lu; Naoki Sone; Kazuma Ito; Nanami Nakayama; Renji Okuda; Yoshiya Miyamoto; Yukimi Jinno; Shiori Yamamura; Motoaki Iwaya; Tetsuya Takeuchi; Satoshi Kamiyama

doi:10.1117/12.2608186

5 March 2022 Suppression of c-plane emission in GaInN/GaN multiquantum shells/nanowires for efficient LEDs

Sae Katsuro, Weifang Lu, Naoki Sone, Kazuma Ito, Nanami Nakayama, Renji Okuda, Yoshiya Miyamoto, Yukimi Jinno, Shiori Yamamura, Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama

Author Affiliations +

Proceedings Volume PC12001, Gallium Nitride Materials and Devices XVII; PC120011D (2022) https://doi.org/10.1117/12.2608186
Event: SPIE OPTO, 2022, San Francisco, California, United States

Conference Poster

Abstract

GaInN/GaN multi-quantum shells nanowires (NWs) are coaxially grown in non-polar m-plane or semi-polar r-plane surface, which is expected to improve the luminous efficiency. The emission wavelengths usually redshift from the sidewall to top c-plane region. However, the emission from c-plane has low luminous efficiency. In this research, the c-plane area of NWs in one sample was removed by dry etching prior to the fabrication process, while the other one without c-plane etching was prepared to investigate the effect of c-plane region on the luminescence intensity. The sample with etching shows 12 times higher output power than the sample without etching.

Conference Presentation

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Sae Katsuro, Weifang Lu, Naoki Sone, Kazuma Ito, Nanami Nakayama, Renji Okuda, Yoshiya Miyamoto, Yukimi Jinno, Shiori Yamamura, Motoaki Iwaya, Tetsuya Takeuchi, and Satoshi Kamiyama "Suppression of c-plane emission in GaInN/GaN multiquantum shells/nanowires for efficient LEDs", Proc. SPIE PC12001, Gallium Nitride Materials and Devices XVII, PC120011D (5 March 2022); https://doi.org/10.1117/12.2608186

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