Journal
NANOTECHNOLOGY
Volume 32, Issue 23, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/abe672
Keywords
self-power; perovskites quantum dots; photodetector
Funding
- National Natural Science Foundation of China [61675147, 61735010, 62005074, 91838301]
- National Key Research and Development Program of China [2017YFA0700202]
- Basic Research Program of Shenzhen [JCYJ20170412154447469]
- Beiyang yong junior faculties of Tianjin university [2019XRG-0056]
- Innovation Projects of Department of Education of Guangdong Province [2018KQNCX264]
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The self-powered PD based on all-inorganic cesium lead bromine perovskites QDs demonstrates fast response time, frequency and temperature independence, which is expected to play an important role in areas such as solar cells and energy harvesting.
All-inorganic cesium lead bromine (CsPbBr3) perovskites quantum dots (QDs) are one of the most photoelectric materials due to their high absorption coefficient, pronounced quantum-size effect, tunable optical property. Here, a self-powered PD based on all-inorganic CsPbBr3 perovskites QDs is fabricated and demonstrated. The light-induced pyroelectric effect is utilized to modulate the optoelectronic processes without the external power supply. The working mechanism of the PD is carefully investigated upon 532 nm laser illumination and the minimum recognizable response time of the self-powered PD is 1.5 mu s, which are faster than those of most previously reported wurtzite nanostructure PDs. Meanwhile, the frequency and temperature independence of the self-powered PD are experimented and summarized. The self-powered PD with high performance is expected to have extensive applications in solar cell, energy harvesting, resistive random access memory.
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