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Singlet Fission of Non-polycyclic Aromatic Molecules in Organic Photovoltaics
So Kawata1, Yong-Jin Pu1,2, Ayaka Saito1
1Department of Organic Device Engineering, Yamagata University, Yonezawa, Yamagata, 992-8510, Japan.
Abstract:
Singlet fission of thienoquinoid compounds in organic photovoltaics is demonstrated. The escalation of the thienoquinoid length of the compounds realizes a suitable packing structure and energy levels for singlet fission. The magnetic-field dependence of the photocurrent and the external quantum efficiency of the devices reveal singlet fission of the compounds and dissociation of triplet excitons into charges.
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