[16p-Z20-1~11] 12.5 Organic solar cells

[16p-Z20-1] [Young Scientist Presentation Award Speech] Carrier-density Dependence of Hall Mobilities in CH₃NH₃PbBr₃ Single Crystals

〇Takumi Kimura¹, Kenichi Oto¹, Yoshihiko Kanemitsu², Yasuhiro Yamada¹ (1.Chiba Univ., 2.Kyoto Univ.)

Keywords:perovskite, CH3NH3PbBr3, mobility

We will discuss the physical mechanism of carrier-density dependence of Hall mobilities in lead halide perovskites based on Carrier-Resolved Photo-Hall Measurement of CH₃NH₃PbBr₃ single crystal. We have performed the measurement under a green laser at 555 nm wavelength to excite photocarriers uniformly in the sample. The maximum hole and electron mobilities obtained were respectively 322 cm²/Vs and 318 cm²/Vs at the photocarrier density of 3.2×10¹³ cm^-3. Also, the carrier mobilities changed with the photocarrier density to the power of 0.5.