High-Performance All-Polymer Solar Cells Based on Face-On Stacked Polymer Blends with Low Interfacial Tension
详细信息 查看全文
- 作者：Hyunbum Kang ; Ki-Hyun Kim ; Joonhyeong Choi ; Changyeon Lee ; Bumjoon J. Kim
- 刊名：ACS Macro Letters
- 出版年：2014
- 出版时间：October 21, 2014
- 年：2014
- 卷：3
- 期：10
- 页码：1009-1014
- 全文大小：335K
- ISSN：2161-1653
文摘
We report highly efficient all-polymer solar cells with power conversion efficiencies of over 4.5% by highly intermixed blends of PTB7-Th donor and P(NDI2OD-T2) acceptor polymers. The low interfacial tension and the face-on 蟺鈥撓€ stackings of the all-polymer blends afforded desired nanophase morphology, which facilitates efficient charge transport from the active layer to each electrode. In addition, the incorporation of 1,8-diiodooctane additives was able to tune the degree of crystallinity and orientation of P(NDI2OD-T2) acceptors, resulting in remarkable enhancement of electron mobility, external quantum efficiency, and JSC values.