Hot Paper in Physics

February 2014
“Tandem polymer solar cells featuring a spectrally matched low-bandgap polymer,” by Letian Dou, et al., Nature Photonics, 6(3): 180-5, March 2012.

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, similar to 1.44 eV). A single-layer device based on the polymer provides a power conversion efficiency of similar to 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.”

This 2012 report from Nature Photonics was cited 69 times in current journal articles indexed by Thomson Reuters during July-August 2013. Thanks to that two-month total, the paper currently ranks as the third-most-cited physics paper published in the last two years, excluding reviews. Prior to the most recent bimonthly tally, citations to the paper have accrued as follows, as tracked by Essential Science Indicators Hot Papers:

May-June 2013: 48 citations
March-April 2013: 53
January-February 2013: 38
November-December 2012: 55
September-October 2012: 26
July-August 2012: 15
May-June 2012: 8
March-April 2012: 1

Total citations to date: 313

SOURCE: Thomson Reuters Web of Science

The data and citation records included in this report are from Thomson Reuters Web of ScienceTM. Web of ScienceTM is a registered trademark of Thomson Reuters. All rights reserved.