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

Chemistry and Nanoscience

Research output: Contribution to journal › Article › peer-review

1411 Scopus Citations

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	American 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 https://doi.org/10.1038/nphoton.2011.356
State	Published - Mar 2012

NREL Publication Number

NREL/JA-5200-52653

Keywords

cell characterization
low-bandgap polymer
solar cells
tandem devices

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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.",

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AU - You, Jingbi

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AU - He, Youjun

AU - Murase, Seiichiro

AU - Moriarty, Tom

AU - Emery, Keith

AU - Li, Gang

AU - Yang, Yang

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AB - 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.

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Tandem Polymer Solar Cells Featuring a Spectrally Matched Low-Bandgap Polymer

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Keywords

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