Haoxuan Huang, Guojiao Xiang, Chengle Song, Zhen He, Jiahui Zhang, Jinming Zhang, Zhiang Yue, Xian Zhang, Peiyao Wang, Yidan Jin, Mengyan Mei, Jinwei Ding, Yongqi Wang, Yang Zhao, Hui Wang
To fabricate a ZnO-related light-emitting diode (LED) with zero emission at blue wavelengths ("blue-free"), an ingenious strategy is employed. Specifically, for the first time to the best of our knowledge, a natural oxide interface layer, possessing remarkable visible emission potential, is introduced into the Au/i-ZnO/n-GaN metal-insulator-semiconductor (MIS) structure. The unique Au/i-ZnO/interface layer/n-GaN structure successfully eliminated the harmful blue emissions (400-500 nm) from the ZnO film, and the remarkable orange electroluminescence is mainly attributed to the impact ionization process of the natural interface layer at high electric field...
July 1, 2023: Optics Letters