Singlet fission efficiency in tetracene-based organic solar cells
Name
APL-104-193901.pdf
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1.16 MB
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Adobe PDF
Checksum (MD5)
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Author(s)
Wu, Tony C.
Thompson, Nicholas J.
Yost, Shane R.
Van Voorhis, Troy
Baldo, Marc A.
Congreve, Daniel Norbert
Hontz, Eric Richard
Date Issued
May 2014
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Wu, Tony C., Nicholas J. Thompson, Daniel N. Congreve, Eric Hontz, Shane R. Yost, Troy Van Voorhis, and Marc A. Baldo. “Singlet Fission Efficiency in Tetracene-Based Organic Solar Cells.” Appl. Phys. Lett. 104, no. 19 (May 12, 2014): 193901. © 2014 AIP Publishing LLC
Version
Final published version
Abstract
Singlet exciton fission splits one singlet exciton into two triplet excitons. Using a joint analysis of photocurrent and fluorescence modulation under a magnetic field, we determine that the triplet yield within optimized tetracene organic photovoltaic devices is 153% ± 5% for a tetracene film thickness of 20 nm. The corresponding internal quantum efficiency is 127% ± 18%. These results are used to prove the effectiveness of a simplified triplet yield measurement that relies only on the magnetic field modulation of fluorescence. Despite its relatively slow rate of singlet fission, the measured triplet yields confirm that tetracene is presently the best candidate for use with silicon solar cells.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1063/1.4876600
