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The Differences in Spatial Luminescence Characteristics between Blue and Green Quantum Wells in Monolithic Semipolar (20-21) LEDs Using SNOM
Li, Aixing1,2; Li, Yufeng1,2; Song, Jie3; Yang, Haifeng1,2; Zhang, Ye1,2; Hu, Peng1,2; Tian, Zhenhuan1,2; Zhang, Minyan1,2; Li, Qiang1,2; Yun, Feng1,2
作者部门瞬态光学研究室
2022-10
发表期刊NANOMATERIALS
ISSN2079-4991
卷号12期号:19
产权排序3
摘要

The differences in spatially optical properties between blue and green quantum wells (QWs) in a monolithic dual-wavelength semipolar (20-21) structure were investigated by scanning near-field optical microscopy (SNOM). The shortest wavelength for green QWs and the longest wavelength for blue QWs were both discovered in the region with the largest stress. It demonstrated that In composition, compared to stress, plays a negligible role in defining the peak wavelength for blue QWs, while for green QWs, In composition strongly affects the peak wavelength. For green QWs, significant photoluminescence enhancement was observed in the defect-free region, which was not found for blue QWs. Furthermore, the efficiency droop was aggravated in the defect-free region for green QWs but reduced for blue QWs. It indicates that carrier delocalization plays a more important role in the efficiency droop for QWs of good crystalline quality, which is experimentally pointed out for the first time.

关键词semipolar LEDs localization states scanning near-field optical microscopy
DOI10.3390/nano12193386
收录类别SCI
语种英语
WOS记录号WOS:000867124300001
出版者MDPI
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/96189
专题瞬态光学研究室
通讯作者Li, Yufeng; Song, Jie; Yun, Feng
作者单位1.Xi An Jiao Tong Univ, Shaanxi Prov Key Lab Photon & Informat Technol, Xian 710049, Peoples R China
2.Xi An Jiao Tong Univ, Solid State Lighting Engn Res Ctr, Xian 710049, Peoples R China
3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
推荐引用方式
GB/T 7714
Li, Aixing,Li, Yufeng,Song, Jie,et al. The Differences in Spatial Luminescence Characteristics between Blue and Green Quantum Wells in Monolithic Semipolar (20-21) LEDs Using SNOM[J]. NANOMATERIALS,2022,12(19).
APA Li, Aixing.,Li, Yufeng.,Song, Jie.,Yang, Haifeng.,Zhang, Ye.,...&Yun, Feng.(2022).The Differences in Spatial Luminescence Characteristics between Blue and Green Quantum Wells in Monolithic Semipolar (20-21) LEDs Using SNOM.NANOMATERIALS,12(19).
MLA Li, Aixing,et al."The Differences in Spatial Luminescence Characteristics between Blue and Green Quantum Wells in Monolithic Semipolar (20-21) LEDs Using SNOM".NANOMATERIALS 12.19(2022).
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