This paper reports the preparation of CsSnBr₃ perovskite by solid-phase reaction, and studies its properties and perovskite solar cell (PSC). Our CsSnBr₃ film is testified as perovskite with good crystalline quality, uniform morphology and being stable in air for 8 days. The device structure, i.e., FTO/TiO₂/CsSnBr₃/MoO₃/Al, is a never-reported structure for CsSnBr₃ based PSC with planar heterojunction and without both the traditional organic hole transport layer and the expensive gold back-electrode. The device exhibits power conversion efficiency of 1.5% with very small forward and reverse scanning hysteresis, which is usually severe in PSC devices. Besides, in the work-discussion, we provide a couple of scientific equations with references, which are quite informative and instructive for the study of perovskite crystalline and semiconductor thin-film/solar cell.

本文报道了固相反应制备CsSnBr ₃钙钛矿，并研究了其性质和钙钛矿太阳能电池（PSC）。我们的CsSnBr ₃薄膜经验证为钙钛矿，具有良好的晶体质量，均匀的形貌并在空气中稳定8天。器件结构，即FTO / TiO ₂ / CsSnBr ₃ / MoO ₃ / Al，是CsSnBr ₃从未报道的结构基PSC，具有平面异质结，并且没有传统的有机空穴传输层和昂贵的金背电极。该器件的功率转换效率为1.5％，正向和反向扫描磁滞非常小，这在PSC器件中通常很严重。此外，在工作讨论中，我们提供了一些具有参考意义的科学方程式，对于钙钛矿晶体和半导体薄膜/太阳能电池的研究非常有启发性和指导意义。