Nonpolar light emitting diodes of m-plane ZnO on c-plane GaN with the Al2O3 interlayer
Nonpolar light emitting diodes of m-plane ZnO on c-plane GaN with the Al2O3 interlayer
复制标题
具有 Al2O3 中间层的 c 面 GaN 上 m 面 ZnO 的非极性发光二极管
DOI:
10.1063/1.4801761
复制
发表时间:
2013-04-08
影响因子:
4
通讯作者:
Liu, C.
中科院分区:
文献类型:
--
作者:
Wang, T.;Wu, H.;Liu, C.
Nonpolar m-plane ZnO films are deposited on GaN (0002) with a 10 nm Al2O3 interlayer by atomic layer deposition. The growth direction of the ZnO films directly on GaN (0002) is [70 (7) over bar4] (perpendicular to (10 (1) over bar1) plane), whereas with the Al2O3 interlayer it changes into [10 (1) over bar0]. With the Al2O3 interlayer, the m-plane ZnO films are presented and the leakage current of the heterojunctions dramatically reduces. The electroluminescence spectra of the n-ZnO/Al2O3/p-GaN heterojunctions are dominated by a blue emission under forward biases, whereas it is violet under reverse biases. (C) 2013 AIP Publishing LLC.