Efficient Charge Dissociation of Triplet Excitons in Bulk Heterojunction Solar Cells
نویسندگان
چکیده
Understanding the sources of energy loss in bulk heterojunction (BHJ) solar cells is outstanding importance for increasing power conversion energy. Herein, we employ a full quantum mechanics approach to determine rates charge transfer processes at acceptor–donor interface prototypical BHJ blend. It shown that recombination singlet (CT) state acceptor/donor (A/D) very fast, being most effective process which prevents efficient migration toward electrodes. Triplet CT states can also undergo by fast decay low lying triplet donor and/or acceptor, but backward enough allow dissociation. Slowing down appears be hardly practicable, since it would reflect either on reduced spectral absorption window or slow rate photoinduced electron transfer, so an alternative and possibly more viable route organic cell efficiency could favoring formation over ones.
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ژورنال
عنوان ژورنال: ACS applied energy materials
سال: 2022
ISSN: ['2574-0962']
DOI: https://doi.org/10.1021/acsaem.2c01495