Journal
NATURE REVIEWS MATERIALS
Volume 2, Issue 8, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/natrevmats.2017.43
Keywords
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Funding
- US Office of Naval Research (ONR) [N00014-14-1-0648]
- Air Force Office of Scientific Research (AFOSR) [FA2386-15-1-4108]
- National Science Foundation [CHE 1230598]
- Hong Kong Polytechnic University [1-ZE29]
- [DMR 1335645]
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The technology of polymer-based organic photovoltaic (OPV) cells has made great progress in the past decade, with the power conversion efficiency increasing from just a few per cent to around 12%, and the stability increasing from hours to years. One of the important milestones in this progress has been the invention of infrared-absorbing low-bandgap polymers, which allows the OPV cells to form effective tandem structures for harvesting near-infrared energy from the solar spectrum. In this Review, we focus on the progress in low-bandgap conjugated polymers and several tandem OPV cells enabled by these low-bandgap polymers. Specifically, we cover polymer-based tandem solar cells; hybrid tandem solar cells combining polymers with hydrogenated amorphous silicon; and unconventional solar cells. For each of these technologies, we address the challenges and offer our perspectives for future development.
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