Nonpolar light emitting diodes of m-plane ZnO on c-plane GaN with the Al2O3 interlayer

被引:38
|
作者
Wang, T. [1 ]
Wu, H. [1 ]
Zheng, H. [1 ,2 ]
Wang, J. B. [1 ,2 ]
Wang, Z. [1 ]
Chen, C. [1 ]
Xu, Y. [1 ]
Liu, C. [1 ]
机构
[1] Wuhan Univ, Sch Phys & Technol, Minist Educ, Key Lab Artificial Micro & Nanostruct, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Sch Phys & Technol, Ctr Electron Microscopy, Wuhan 430072, Peoples R China
基金
中央高校基本科研业务费专项资金资助;
关键词
FABRICATION; HETEROJUNCTIONS; ELECTROLUMINESCENCE; SEMICONDUCTORS; EMISSION;
D O I
10.1063/1.4801761
中图分类号
O59 [应用物理学];
学科分类号
摘要
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.
引用
收藏
页数:4
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