Hybrid organolead halide perovskites, a class of materials used in optoelectronic devices, have attracted significant attention due to their performance and fabrication process. This paper reports on a pinhole free, compact, high-quality, mixed-cation (consisting of formamidinium (FA) and methylammonium (MA)) FA_xMA_(1−x)PbI₃ polycrystalline perovskite film prepared in a one-step solution process using a doctor-blading deposition technology under ambient conditions with no subsequent annealing. A perovskite film domain size of up to 100 μm was obtained. A FA_xMA_(1−x)PbI₃-based photodetector using a simplestructure glass/FA_xMA_(1−x)PbI₃/Au device was fabricated. Ultraviolet (UV) high photoresponse reached the near-infrared (NIR) range. Its best responsivity (R) was 10.57 AW^-1 with a response speed of ∼9.0 ms. Results indicate that this technique results in high-quality, phase-pure, FA_xMA_(1−x)PbI₃ perovskite films and high-performance optoelectronic devices.

杂化有机铅卤化物钙钛矿，一种用于光电器件的材料，由于其性能和制造工艺而引起了极大的关注。本文报道了一步制备的无针孔，致密，高质量，混合阳离子（由甲ami（FA）和甲基铵（MA）组成）FA _x MA _{（1- x）} PbI ₃多晶钙钛矿薄膜。在环境条件下使用刮刀式沉积技术进行工艺，无需后续退火。获得的钙钛矿膜畴尺寸最大为100μm。使用简单结构的玻璃/ FA的基于FA _x MA _{（1- x）} PbI ₃的光电探测器_制作了x MA_{（1- x）} PbI ₃ / Au器件。紫外线（UV）的高光响应达到近红外（NIR）范围。其最佳响应度（R）为10.57 AW ^-1，响应速度约为9.0毫秒。结果表明，该技术可产生高质量，纯相的FA _x MA_{（1- x）} PbI ₃钙钛矿薄膜和高性能光电器件。