A Wide Bandgap Polymer with Strong π-π Interaction for Efficient Fullerene-Free Polymer Solar Cells
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- 作者：Huifeng Yao ; Runnan Yu ; Tae Joo Shin ; Hao Zhang ; Shaoqing Zhang ; Bomee Jang ; Mohammad Afsar Uddin ; Han Young Woo and Jianhui Hou
- 刊名：Advanced Energy Materials
- 出版年：2016
- 出版时间：August 10, 2016
- 年：2016
- 卷：6
- 期：15
- 全文大小：972K
- ISSN：1614-6840
文摘
A wide bandgap polymer donor PBDTS-DTBTO is designed and synthesized, which shows an optical bandgap of 1.76 eV and strong π–π interaction. By using a low-bandgap acceptor ITIC, power conversion efficiency over 9% is achieved in the fullerene-free polymer solar cells (PSC) device. Furthermore, the PSC devices fabricated by PBDTS-DTBTO:ITIC show relatively small sensitivity to variations of the active layer thickness.