Highly Efficient Organic Solar Cells with Improved Vertical Donor–Acceptor Compositional Gradient Via an Inverted Off‐Center Spinning Method
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- 2 December 2015
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 28 (5), 967-974
- https://doi.org/10.1002/adma.201504014
Abstract
A novel, yet simple solution fabrication technique to address the trade‐off between photocurrent and fill factor in thick bulk heterojunction organic solar cells is described. The inverted off‐center spinning technique promotes a vertical gradient of the donor–acceptor phase‐separated morphology, enabling devices with near 100% internal quantum efficiency and a high power conversion efficiency of 10.95%.Keywords
Funding Information
- Office of Naval Research (N000141410531)
- China Scholarship Council (201308510084)
- Fundamental Research Funds for the Central Universities (ZYGX2014J046)
- Open Foundation of State Key Laboratory of Electronic Thin Films and Integrated Devices (KFJJ201410)
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