PbI2 Nanosheets for Photodetectors via the Facile Cooling Thermal Supersaturation Solution Method

As a potential candidate for modern optoelectronics, two-dimensional PbI2 nanosheets have received much attention. In this paper, we report a simple, low-cost cooling supersaturated aqueous solution method for the controllable morphology growth of high-quality PbI2 single crystals. The fluorescence...

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Published in:Journal of physical chemistry. C 2019-04, Vol.123 (14), p.9609-9616
Main Authors: Wang, Rendong, Li, Shutao, Wang, Pengfei, Xiu, Junshan, Wei, Gongxiang, Sun, Meiling, Li, Zhao, Liu, Yunyan, Zhong, Mianzeng
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container_issue 14
container_start_page 9609
container_title Journal of physical chemistry. C
container_volume 123
creator Wang, Rendong
Li, Shutao
Wang, Pengfei
Xiu, Junshan
Wei, Gongxiang
Sun, Meiling
Li, Zhao
Liu, Yunyan
Zhong, Mianzeng
description As a potential candidate for modern optoelectronics, two-dimensional PbI2 nanosheets have received much attention. In this paper, we report a simple, low-cost cooling supersaturated aqueous solution method for the controllable morphology growth of high-quality PbI2 single crystals. The fluorescence kinetics of PbI2 nanosheets was investigated by the temporally and spatially resolved spectrum measurements. The body center region of as-prepared PbI2 nanosheets showed a higher density of defect states than that at the edges or corners. In addition, the as-prepared PbI2 nanosheet-based photodetectors exhibit stable and efficient performance, including the large on/off ratio (1.371 × 103), high light response (40 mA/W), and high detection sensitivity (3.31 × 1010 J).
doi_str_mv 10.1021/acs.jpcc.9b01322
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title PbI2 Nanosheets for Photodetectors via the Facile Cooling Thermal Supersaturation Solution Method
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