Intrinsic Charge Transport across Phase Transitions in Hybrid Organo‐Inorganic Perovskites. Issue 30 (17th May 2016)

• Record Type: Journal Article
• Authors: Yi, Hee Taek; Wu, Xiaoxi; Zhu, Xiaoyang; Podzorov, Vitaly
• Is Part Of: Advanced materials. Volume 28:Issue 30(2016)
• Page Start: 6509
• Page End: 6514
• Publication Date: 2016-05-17
• Subjects: acoustic phonon scattering -- carrier mobility -- Hall effect -- organo‐inorganic perovskites -- hybrid solar cells -- lead halide perovskites -- polarons; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201600011
• Languages: English
• ISSNs: 0935-9648

Abstract

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.