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Impact of Small Phonon Energies on the Charge-Carrier Lifetimes in Metal-Halide Perovskites

Kirchartz, Thomas ; Markvart, Tom ; Rau, Uwe ; Egger, David A.


Metal-halide perovskite (MHP) solar cells exhibit long nonradiative lifetimes as a crucial feature enabling high efficiencies. Long nonradiative lifetimes occur if the transfer of electronic into vibrational energy is slow due to, e.g., a low trap density, weak electron phonon coupling, or the requirement to release many phonons in the electronic transition. Here, we combine known material ...


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