Nanosecond intersystem crossing times in fullerene acceptors: implications for organic photovoltaic diodes.
basic_science · Level V
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- Record sourced from PubMed, PMID 24902831.
- Also identified by DOI 10.1002/adma.201400846 and PMC identifier 4515088.
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Abstract
Triplet-exciton formation through intersystem crossing of photogenerated singlet excitons in fullerene acceptors can compete with charge generation in organic photovoltaic diodes. This article reports the intersystem crossing timescale (τISC ) of the most commonly used fullerene acceptors, PC60 BM and PC70 BM, in solutions and in spin-coated films. These times are on the nanosecond timescale, and are longer than the characteristic times for charge generation (τd ).