Tandem polymer solar cells featuring a spectrally matched low-bandgap polymer

Letian Dou; Jingbi You; Jun Yang; Chun Chao Chen; Youjun He; Seiichiro Murase; Tom Moriarty; Keith Emery; Gang Li; Yang Yang

doi:10.1038/nphoton.2011.356

Tandem polymer solar cells featuring a spectrally matched low-bandgap polymer

Letian Dou, Jingbi You, Jun Yang, Chun Chao Chen, Youjun He, Seiichiro Murase, Tom Moriarty, Keith Emery, Gang Li, Yang Yang

Research output: Journal article publication › Journal article › Academic research › peer-review

1412 Citations (Scopus)

Abstract

Tandem solar cells provide an effective way to harvest a broader spectrum of solar radiation by combining two or more solar cells with different absorption bands. However, for polymer solar cells, the performance of tandem devices lags behind single-layer solar cells mainly due to the lack of a suitable low-bandgap polymer. Here, we demonstrate highly efficient single and tandem polymer solar cells featuring a low-bandgap conjugated polymer (PBDTT-DPP: bandgap, ∼1.44 eV). A single-layer device based on the polymer provides a power conversion efficiency of ∼6%. When the polymer is applied to tandem solar cells, a power conversion efficiency of 8.62% is achieved, which is, to the best of our knowledge, the highest certified efficiency for a polymer solar cell to date.

Original language	English
Pages (from-to)	180-185
Number of pages	6
Journal	Nature Photonics
Volume	6
Issue number	3
DOIs	https://doi.org/10.1038/nphoton.2011.356
Publication status	Published - 1 Mar 2012
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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10.1038/nphoton.2011.356

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AU - You, Jingbi

AU - Yang, Jun

AU - Chen, Chun Chao

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AU - Murase, Seiichiro

AU - Moriarty, Tom

AU - Emery, Keith

AU - Li, Gang

AU - Yang, Yang

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Tandem polymer solar cells featuring a spectrally matched low-bandgap polymer

Abstract

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