title: Intrinsic Charge Transport across Phase Transitions in Hybrid Organo-Inorganic Perovskites.
abstract: Hall effect measurements in CH3 NH3 PbBr3 single crystals reveal that the charge-carrier mobility follows an inverse-temperature power-law dependence, μ ∝ T(-) (γ) , with the power exponent γ = 1.4 ± 0.1 in the cubic phase, indicating an acoustic-phonon-dominated carrier scattering, and γ = 0.5 ± 0.1 in the tetragonal phase, suggesting another dominant mechanism, such as a piezoelectric or space-charge scattering.
authors.affiliation: Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, 08854, USA.
authors.forename: Hee Taek
authors.initials: HT
authors.lastname: Yi
authors.affiliation: Department of Chemistry, Columbia University, New York, NY, 10027, USA.
authors.forename: Xiaoxi
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of Chemistry, Columbia University, New York, NY, 10027, USA.
authors.forename: Xiaoyang
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, 08854, USA.|Institute for Advanced Materials, Devices and Nanotechnology (IAMDN), Rutgers University, Piscataway, NJ, 08854, USA.
authors.forename: Vitaly
authors.initials: V
authors.lastname: Podzorov
keywords: Hall effect; acoustic phonon scattering; carrier mobility; hybrid solar cells; lead halide perovskites; organo-inorganic perovskites; polarons