Polarity Control and Nanoscale Optical Characterization of AlGaN-Based Multiple-Quantum-Wells for Ultraviolet C Emitters
文献类型：期刊论文
| 作者 | Xu, Houqiang; Jiang, Jie'an; Dai, Yijun; Cui, Mei; Li, Kuang-hui; Ge, Xiaotian; Hoo, Jason; Yan, Long; Guo, Shiping; Ning, Jiqiang |
| 刊名 | ACS APPLIED NANO MATERIALS
 |
| 出版日期 | 2020 |
| 卷号 | 3期号:6页码:5335-5342 |
| 关键词 | LIGHT-EMITTING-DIODES GAN GROWTH PARAMETERS WATER |
| DOI | 10.1021/acsanm.0c00706 |
| 英文摘要 | 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. |
| 学科主题 | Science & Technology - Other Topics ; Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20698]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Ye, JC (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China. 2.Guo, W 3.Ye, JC (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Xu, Houqiang,Jiang, Jie'an,Dai, Yijun,et al. Polarity Control and Nanoscale Optical Characterization of AlGaN-Based Multiple-Quantum-Wells for Ultraviolet C Emitters[J]. ACS APPLIED NANO MATERIALS,2020,3(6):5335-5342. |
| APA | Xu, Houqiang.,Jiang, Jie'an.,Dai, Yijun.,Cui, Mei.,Li, Kuang-hui.,...&Ye, Jichun.(2020).Polarity Control and Nanoscale Optical Characterization of AlGaN-Based Multiple-Quantum-Wells for Ultraviolet C Emitters.ACS APPLIED NANO MATERIALS,3(6),5335-5342. |
| MLA | Xu, Houqiang,et al."Polarity Control and Nanoscale Optical Characterization of AlGaN-Based Multiple-Quantum-Wells for Ultraviolet C Emitters".ACS APPLIED NANO MATERIALS 3.6(2020):5335-5342. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。