Abstract
Hybrid perovskite CH3NH3PbCl3 single crystals have received much attention in the field of photodetectors due to their outstanding optoelectronic properties. Herein, a simple growth method of CH3NH3PbCl3 single crystal sheets was demonstrated in detail. The steady-state solution micro-reaction method with the small-hole rate control and the liquid-surface height control effectively solves the disadvantages of liquid- and gas-phase methods and realizes the preparation of a CH3NH3PbCl3 single crystal sheet with the controllable growth rate, size, and thickness, and good crystal quality and high crystallinity. Moreover, photodetectors based on one CH3NH3PbCl3 single crystal perovskite were fabricated with the responsivity of 80 mA/W under 395 nm light at 5 V. Meanwhile, a rise time of 22.3 µs and a fall time of 16.5 µs were obtained, indicative of a relatively fast response. These findings demonstrate that the CH3NH3PbCl3 single crystal perovskite have great potential applications in optoelectronic fields.
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