The effect of fluorination on the photovoltaic performance of the D–A copolymers containing naphtho[2,3-c]thiophene-4,9-dione and bithiophene moieties
Literature Information
Publication Date
2016-07-13
DOI
10.1039/C6PY00883F
Impact Factor
5.582
Authors
Xinjian Geng, Liming Ding
View Original
Abstract
Four D–A copolymers, PNTDBT, PFNTDBT, PNTDFBT and PFNTDFBT, were prepared for systematically studying the effect of fluorination on photovoltaic performance. The fluorinated copolymers, PFNTDBT, PNTDFBT and PFNTDFBT, gave higher FF (∼70%) than PNTDBT due to their reduced bimolecular recombination and balanced mobilities. PNTDFBT with F on the BT unit shows a higher mobility than that of PFNTDBT with F on the NTD unit, leading to a higher Jsc. PFNTDFBT gave the highest PCE, 7.79%, which might result from its higher mobility and the optimal miscibility between PFNTDFBT and PC71BM.
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Source Journal
Polymer Chemistry
CiteScore:
8.6
Self-citation Rate:
7.3%
Articles per Year:
457
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