Identifying defect-tolerant semiconductors with high minority-carrier lifetimes: beyond hybrid lead halide perovskites
Author(s)Stevanović, Vladan; Ginley, David S.; Brandt, Riley E; Buonassisi, Anthony
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The emergence of methyl-ammonium lead halide (MAPbX₃) perovskites motivates the identification of unique properties giving rise to exceptional bulk transport properties, and identifying future materials with similar properties. Here, we propose that this “defect tolerance” emerges from fundamental electronic-structure properties, including the orbital character of the conduction and valence band extrema, the charge-carrier effective masses, and the static dielectric constant. We use MaterialsProject.org searches and detailed electronic-structure calculations to demonstrate these properties in other materials than MAPbX₃. This framework of materials discovery may be applied more broadly, to accelerate discovery of new semiconductors based on emerging understanding of recent successes.
DepartmentMassachusetts Institute of Technology. Department of Mechanical Engineering
Cambridge University Press (CUP)
Brandt, Riley E. et al.“Identifying Defect-Tolerant Semiconductors with High Minority-Carrier Lifetimes: Beyond Hybrid Lead Halide Perovskites.” MRS Communications 5, 2 (May 2015): 265–275 © 2015 Materials Research Society
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