Study on the performance of high-voltage deep ultraviolet light-emitting diodes

Yu Hsuan Hsu, Kang Wei Peng, Yi Hsin Lin, Ming Chun Tseng, Su Hui Lin, Meng Chun Shen, Ting Zhu Wu, Zhong Chen, Ray Hua Horng*

*此作品的通信作者

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

This study fabricated high-voltage, low-current DUV-LEDs by connecting two devices. Due to better current spreading and the enhanced reflective mirror effect, high-voltage devices present a higher dynamic resistance, emission output power, wall-plug efficiency, external quantum efficiency, and view angle than single traditional devices. The study found that when the injection current was 320 mA, the maximum output power was exhibited at 47.1 mW in the HV sample. The maximum WPE and EQE of high-voltage DUV-LEDs were 2.46% and 5.48%, respectively. Noteworthily, the redshift wavelength shifted from 287.5 to 280.5 nm, less than the traditional device—from 278 to 282 nm. Further, due to the uniform emission patterns in high-voltage devices, the view angle presents 130 degrees at 100 mA input current. In this study, the high-voltage device showed more excellent properties than the traditional device. In particular, it presented a high potential application in high-voltage circuits, which can remove transformers to eliminate extra power consumption.

原文English
頁(從 - 到)42241-42248
頁數8
期刊Optics Express
30
發行號23
DOIs
出版狀態Published - 7 11月 2022

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