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Title
An alternating D-A(1)-D-A(2) copolymer containing two electron-deficient moieties for efficient polymer solar cells
Article in journal
Authors
Wenjun Sun, Zaifei Ma, Dongfeng Dang, Weiguo Zhu, Mats R. Andersson, Fengling Zhang, Ergang Wang
Publication Year
2013
Source
JOURNAL OF MATERIALS CHEMISTRY A, 2013, (1)37, 11141-11144
Link to Source (DOI)
10.1039/c3ta12321a
Abstract
<p>Unlike normal donor-acceptor (D-A) polymers containing only one electron-deficient segment in their repeating unit, the incorporation of two electron-deficient moieties with different absorption behaviors, forming a D-A(1)-D-A(2) internal structure in the alternating copolymer, showed a broader absorption spectrum than its constituent parts and enhanced photovoltaic performance. This work is anticipated to open the door to the design of new low bandgap polymers with a broader absorption range for efficient polymer solar cells.</p>