Department of Chemistry , Waterloo Institute of Nanotechnology, University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada.
ACS Appl Mater Interfaces. 2018 Jun 27;10(25):21066-21072. doi: 10.1021/acsami.8b05860. Epub 2018 Jun 13.
A monolith photodetector is presented that utilizes the material properties of MAPbI perovskite for self-powered operation and achieves improved stability by composting with polystyrene. The self-powered operation makes this device suitable for remote applications and in smart systems. Improved stability of more than 20 days, with performance maintained by over 80% under ambient conditions, is achieved by incorporating polystyrene without additional fabrication steps. A plain MAPbI device in comparison shows a performance degradation of 70-85% within 4 days of operation. The incorporation of polystyrene also improves the current detectivity of the device by over 70 times compared to plain perovskite.
一种利用 MAPbI 钙钛矿材料特性实现自供电操作的整体式光电探测器被提出，并通过与聚苯乙烯复合实现了稳定性的提升。自供电操作使该器件适用于远程应用和智能系统。通过不增加额外的制造步骤，掺入聚苯乙烯可使器件的稳定性提高 20 天以上，在环境条件下保持 80%以上的性能。相比之下，不含聚苯乙烯的纯 MAPbI 器件在运行 4 天后性能下降了 70-85%。与纯钙钛矿相比，聚苯乙烯的掺入还使器件的电流探测率提高了 70 多倍。
