Nanosecond intersystem crossing times in fullerene acceptors: implications for organic photovoltaic diodes.

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 ).

SUBMITTER: Chow PC 

PROVIDER: S-EPMC4515088 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature