Abstract
Abstract Organic-inorganic hybrid halide perovskites have attracted much research interest in optoelectronic field due to their excellent photoelectric properties. Herein, we report large-area and high-performance perovskite CH3NH3PbI3 photodetectors fabricated via in-situ thermal-treatment doctor blading technique in ambient condition (humidity ∼45%). As compared with spin-coating deposition technique, the doctor-bladed CH3NH3PbI3 films have larger grain size, as well as good reliability and reproducibility in large area. The doctor-bladed CH3NH3PbI3 photodetectors exhibited high detectivity (D*) of 2.9 × 1012 Jones and high responsivity (R) of 8.95 A/W, as well as the fast response time of less than 7.7 ms. The results indicate that doctor-bladed CH3NH3PbI3 film is a very promising candidate for fabricating large-scale and high-performance optoelectronic devices.
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