Intrinsic Charge Transport across Phase Transitions in Hybrid Organo-Inorganic Perovskites.
basic_science · Level V
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- Record sourced from PubMed, PMID 27185304.
- Also identified by DOI 10.1002/adma.201600011.
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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.