Color-neutral, semitransparent organic photovoltaics for power window applications
Abstract
We demonstrate a semitransparent organic photovoltaic cell that achieves a power conversion efficiency of 10.8% and visible transparency of ∼50% using a nonfullerene acceptor (NFA) featuring strong near-infrared (NIR) absorption and simple synthesis. Contrary to expectations, stronger NIR absorption and closer molecular packing are obtained by employing an additive in these partially, instead of fully fused, rigid NFAs. By combining NIR-absorbing material sets with an optical outcoupling structure as well as transparent electrode, we overcome the trade-offs between efficiency, transparency, and device appearance. These results surpass other semitransparent solar cell technologies based on organic and other thin-film materials systems, showing a promising future for ST-OPVs as power-generating windows and other solar energy harvesting applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 17, 2020
- Source ID
- 10.1073/pnas.2007799117
Entities
People
- Boning Qu
- Harald Ade
- Hongping Yan
- Maojie Zhang
- Stephen R. Forrest
- Xia Guo
- Yongxi Li
- Zhengxing Peng
Organizations
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- North Carolina State University
- Office of Naval Research
- SLAC National Accelerator Laboratory
- Soochow University
- United States Department of Energy
- Universal Display Corporation
- University of Michigan