Naphtho[1,2-b:5,6‑b′]dithiophene Based Two-Dimensional Conjugated Polymers for Highly Efficient Thick-Film Inverted Polymer Solar Cells

Two-dimensional conjugated zigzag naphthodithiophene was used for construction of novel polymer photovoltaic materials. Two novel copolymers based on zigzag naphthodithiophene and alkylthieno­[3,4-c]­pyrrole-4,6-dione inserted with different alkyl substituted thiophene as bridges have been designed...

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Bibliographic Details
Published in:Chemistry of materials 2014-12, Vol.26 (24), p.6947-6954
Main Authors: Zhu, Xiangwei, Fang, Jin, Lu, Kun, Zhang, Jianqi, Zhu, Lingyun, Zhao, Yifan, Shuai, Zhigang, Wei, Zhixiang
Format: Article
Language:English
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Summary:Two-dimensional conjugated zigzag naphthodithiophene was used for construction of novel polymer photovoltaic materials. Two novel copolymers based on zigzag naphthodithiophene and alkylthieno­[3,4-c]­pyrrole-4,6-dione inserted with different alkyl substituted thiophene as bridges have been designed and synthesized (PzNDTT-TPD1 and PzNDTT-TPD2, respectively). The best power conversion efficiency of a PzNDTT-TPD1-based device reaches 7.50% at an active layer thickness of 203 nm and the device performances of PzNDTT-TPD1-based polymer solar cells are all above 6.4% with active layer thickness variations from 141 to 244 nm, suggesting that it is very suitable for the fabrication of high performance, large area solution-processed polymer solar cells.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm5033223