Nanophotonics | |
Electroluminescence and photo-response of inorganic halide perovskite bi-functional diodes | |
article | |
Ning Li1  Ying Suet Lau1  Yanqin Miao1  Furong Zhu1  | |
[1] Department of Physics, Institute of Advanced Materials and Institute of Research and Continuing Education (Shenzhen), Hong Kong Baptist University;Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education and Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology | |
关键词: halide perovskite; light-emitting diode; photodetector; visible light communication; | |
DOI : 10.1515/nanoph-2018-0149 | |
学科分类:社会科学、人文和艺术(综合) | |
来源: De Gruyter | |
【 摘 要 】
In this work, we report our efforts to develop a novel inorganic halide perovskite-based bi-functional light-emitting and photo-detecting diode. The bi-functional diode is capable of emitting a uniform green light, with a peak wavelength of 520 nm, at a forward bias of >2 V, achieving a high luminance of >10 3 cd/m 2 at 7 V. It becomes an efficient photodetector when the bi-functional diode is operated at a reverse bias, exhibiting sensitivity over a broadband wavelength range from ultraviolet to visible light. The bi-functional diode possesses very fast transient electroluminescence (EL) and photo-response characteristics, e.g. with a short EL rising time of ~6 μS and a photo-response time of ~150 μS. In addition, the bi-functional diode also is sensitive to 520 nm, the wavelength of its peak EL emission. The ability of the bi-functional diodes for application in high speed visible light communication was analyzed and demonstrated using two identical bi-functional diodes, one performed as the signal generator and the other acted as a signal receiver. The dual functions of light emission and light detection capability, enabled by bi-functional diodes, are very attractive for different applications in under water communication and visible light telecommunications.
【 授权许可】
CC BY
【 预 览 】
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RO202107200003687ZK.pdf | 980KB | download |