Model for the dynamics of carrier injection in a band with polaronic states: Application to exciton dissociation in organic solar cells
نویسندگان
چکیده
We develop a quantum model for the dynamics of carrier injection in band that presents strong carrier-vibration coupling. This coupling modifies spectral density and can even create pseudogaps signal onset polaronic states. The interacts with many vibration modes is complex many-body process treated by combining scattering theory dynamical mean-field (DMFT). For analyzed here, which adapted to compact phases, number $Z$ neighbors given site large this limit DMFT becomes exact. applied excitonic dissociation at donor-acceptor interface organic solar cells. main ingredients are electron-hole Coulomb interaction, recombination process, existence states acceptor band. Using parameters extracted from ab initio calculations we analyze on charge transfer state (CTS), average energy transferred phonons CTS, yield process. find particular electron-vibration coupling, one get vibrationally cold high as often observed experimentally.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.106.195420