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Inorganic Lead Halide Perovskite Single Crystals: Phase‐Selective Low‐Temperature Growth, Carrier Transport Properties, and Self‐Powered Photodetection
A rapid, low‐temperature, and solution‐based route is developed for growing large‐sized cesium lead halide perovskite single crystals under ambient conditions. An ultralow minority carrier concentration was measured in CsPbBr3 (≈108 holes per cm3, much lower than in any other lead halide perovskite and crystalline silicon), which enables to realize self‐powered photodetectors with a high ON/OFF ratio (105).