Progress in 230nm-band AlGaN far-UVC LEDs and demonstration of 100mW class LED panels

Hideki Hirayama

doi:10.1117/12.2677368

5 October 2023 Progress in 230nm-band AlGaN far-UVC LEDs and demonstration of 100mW class LED panels

Hideki Hirayama

Proceedings Volume PC12652, UV and Higher Energy Photonics: From Materials to Applications 2023; PC1265207 (2023) https://doi.org/10.1117/12.2677368
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Far-UVC light with a wavelength of 230 nm or less are harmless to human body and have a strong inactivating effect for virus. We demonstrated 230-236nm AlGaN-based far-UVC LEDs for the purpose of virus inactivation in the human working space. We achieved the external quantum efficiency (EQE) of more than 1.5 % by introducing polarization doped p-type AlGaN layer for a 236 nm LED. We mounted 80 pieces of 230 nm LEDs in parallel to produce a panel with an output power approximately 220 and 90 mW measured under pulse and CW operation, respectively.

Conference Presentation

Citation Download Citation

Hideki Hirayama "Progress in 230nm-band AlGaN far-UVC LEDs and demonstration of 100mW class LED panels", Proc. SPIE PC12652, UV and Higher Energy Photonics: From Materials to Applications 2023, PC1265207 (5 October 2023); https://doi.org/10.1117/12.2677368

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