Charge-Carrier Dynamics and Mobilities in Formamidinium Lead Mixed-Halide Perovskites.
basic_science · Level V
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- Record sourced from PubMed, PMID 26402226.
- Also identified by DOI 10.1002/adma.201502969.
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Abstract
The mixed-halide perovskite FAPb(Bry I1-y )3 is attractive for color-tunable and tandem solar cells. Bimolecular and Auger charge-carrier recombination rate constants strongly correlate with the Br content, y, suggesting a link with electronic structure. FAPbBr3 and FAPbI3 exhibit charge-carrier mobilities of 14 and 27 cm(2) V(-1) s(-1) and diffusion lengths exceeding 1 μm, while mobilities across the mixed Br/I system depend on crystalline phase disorder.