Promotion of Fast and Efficient Singlet Fission Process of PDI Dimers by Selenium Substitution
Yubo Yang,
Wenli Su,
Hang Wang
et al.
Abstract:Singlet fission (SF) is a triplet generation mechanism capable of turning a singlet exciton into two triplet excitons. It has the potential to enhance the power conversion efficiency of single-junction solar cells. Perylene diimides (PDIs) are a class of dye molecules with photovoltaic properties and are beginning to receive more and more attention due to their potential for SF. Here, we report a selenium-substituted PDI dimer, Se-PDI-II, and we studied its SF mechanism by using steady-state, transient absorpt… Show more
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