Recent progress of metal halide perovskite photodetectors

Metal halide perovskites are the rising stars of optoelectric semiconductor materials and have shown great potential in the field of photodetectors, due to their excellent optoelectronic properties such as nearly 100% photoluminescence quantum yields, greater than 175 mu m of carrier diffusion length and tunable wavelength of light absorption. In fact, metal halide perovskite based photodetectors covering a broad range of light with sensitive response have been demonstrated. In this review, we focus on the recent progress of metal halide perovskite photodetectors. The synthesis, optoelectronic properties of metal halide perovskites, perovskite photodetectors for different spectral regions, strategies for device performance improvement and applications of photodetectors are reviewed. After summarizing and analyzing the current research and challenges, the outlook is presented for future studies on metal halide perovskite photodetectors.