Polarity Control and Nanoscale Optical Characterization of AlGaN-Based Multiple-Quantum-Wells for Ultraviolet C Emitters
Polarity Control and Nanoscale Optical Characterization of AlGaN-Based Multiple-Quantum-Wells for Ultraviolet C Emitters
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用于紫外 C 发射器的 AlGaN 基多量子阱的极性控制和纳米级光学表征
DOI：
10.1021/acsanm.0c00706
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发表时间：
2020-05
影响因子：
5.9
通讯作者：
Ye Jichun
中科院分区：
文献类型：
--
作者：
Xu Houqiang;Jiang Jie'an;Dai Yijun;Cui Mei;Li Kuang-hui;Ge Xiaotian;Hoo Jason;Yan Long;Guo Shiping;Ning Jiqiang;Sun Haiding;Sarkar Biplab;Guo Wei;Ye Jichun
Optical properties of AlGaN UVC multiple-quantum-wells (MQWs) with nanoscale inverted polarity domains are strongly related to polar surfaces and nanoscale structures. In this work, the impact of pregrowth nitridation of the sapphire substrate on the polarity control of UVC MQW is highlighted, and the optical properties of III- and N-polar domains were distinguished. Nanoscale cathodoluminescence peak separation of more than 30 nm is observed in lateral-polarity-structure (LPS) UVC MQWs, which is ascribed to the potential minima induced by the local variation of QW thickness and Ga enrichment inside N-polar domains. After an AlGaN/AlN superlattice is inserted and the V/III ratio is enhanced during growth, the surface morphology of the N-polar domain is greatly improved, leading to a single-peak emission at a wavelength of 275 nm in both the III- and N-polar domains, and a 10-fold stronger peak intensity at the inversion domain boundary. Such understandings on the polar surface optimization and underlying reasons of peak separation enable rational design for efficient UVC emitters with improved performance.
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影响因子：
4
作者：
V. Fiorentini
通讯作者：
V. Fiorentini
DOI：
10.1002/pssa.201431740
发表时间：
2015-05
期刊：
physica status solidi (a)
影响因子：
--
作者：
M. Hoffmann;R. Kirste;S. Mita;W. Guo;J. Tweedie;M. Bobea;I. Bryan;Z. Bryan;M. Gerhold;R. Collazo;Z. Sitar
通讯作者：
M. Hoffmann;R. Kirste;S. Mita;W. Guo;J. Tweedie;M. Bobea;I. Bryan;Z. Bryan;M. Gerhold;R. Collazo;Z. Sitar
282 nm AlGaN 基深紫外发光二极管在纳米图案蓝宝石衬底上具有改进的性能
影响因子：
4
作者：
Dong, Peng;Yan, Jianchang;Qin, Zhixin
通讯作者：
Qin, Zhixin
影响因子：
3.2
作者：
R. Kirste;R. Collazo;G. Callsen;M. R. Wagner;T. Kure;J. Reparaz;S. Mita;Jinqiao Xie;A. Rice;J. Tweedie;Z. Sitar;A. Hoffmann
通讯作者：
R. Kirste;R. Collazo;G. Callsen;M. R. Wagner;T. Kure;J. Reparaz;S. Mita;Jinqiao Xie;A. Rice;J. Tweedie;Z. Sitar;A. Hoffmann
影响因子：
1.8
作者：
Sun, Qian;Cho, Yong Suk;Han, Jung
通讯作者：
Han, Jung