Fabrication of self-assembly polycrystalline perovskite microwires and photodetectors

In this work, perovskite CH3NH3PbI3 (MAPbI(3)) microwires has been synthesized via a simple solution self-assembly method for facile fabrication of photoelectronic devices. A two-step growth process was proposed to elucidate the formation and growth mechanisms of the microwires. Also, a photodetector was fabricated and analyzed its photoresponse characteristics. The device presented a stable and repeatable photocurrent response. The on-off ratio was about 4.02 x 10(3) as well as the rise and decay time was 0.2 ms and 0.25 ms which are comparable even superior to other reported photodetectors of perovskite. (C) 2016 Elsevier B.V. All rights reserved.