Single Crystal Formamidinium Lead Iodide (FAPbI3): Insight into the Structural, Optical, and Electrical Properties

Abstract
5 mm-scale large FAPbI 3 single crystals and corresponding photoconductive properties are shown. The phase transition of FAPbI3 between the α-phase and δ-phase is studied. The carrier mobility is 4.4 cm2 V−1 s−1 with a lifetime of 484 ns in the bulk of the single crystal. Finally, photodetectors based on single-crystal FAPbI3 are demonstrated.
Funding Information
  • National Science Foundation (ECCS-1509955, ECCS- 1202231)
  • Air Force Office of Scientific Research (FA9550-15-1-0333)
  • Innovation Program of Shanghai Municipal Education Commission (14YZ079)
  • Shanghai Municipal Natural Science Foundation (14ZR1430500)