A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability
View / Open Files
Authors
Pazos-Outón, Luis M
Lee, Ju Min
Futscher, Moritz H
Kirch, Anton
Tabachnyk, Maxim
Ehrler, Bruno
Publication Date
2017-02-10Journal Title
ACS Energy Letters
ISSN
2380-8195
Publisher
American Chemical Society
Volume
2
Pages
476-480
Language
English
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Pazos-Outón, L. M., Lee, J. M., Futscher, M. H., Kirch, A., Tabachnyk, M., Friend, R., & Ehrler, B. (2017). A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability. ACS Energy Letters, 2 476-480. https://doi.org/10.1021/acsenergylett.6b00678
Abstract
After 60 years of research, silicon solar cell efficiency saturated close to the theoretical limit, and radically new approaches are needed to further improve the efficiency. The use of tandem systems raises this theoretical power conversion efficiency limit from 34% to 45%. We present the advantageous spectral stability of using voltage-matched tandem solar cells with respect to their traditional series-connected counterparts and experimentally demonstrate how singlet fission can be used to produce simple voltage-matched tandems. Our singlet fission silicon-pentacene tandem solar cell shows efficient photocurrent addition. This allows the tandem system to benefit from carrier multiplication and to produce an external quantum efficiency exceeding 100% at the main absorption peak of pentacene.
Sponsorship
This work is part of the research programme of the Netherlands Organisation for Scientific Research (NWO). The authors acknowledge financial support from the Engineering and Physical Sciences Research Council of the UK (EPSRC) and King Abdulaziz City for Science and Technology (KACST). LMPO acknowledges the Cambridge Home European Scholarship Scheme (CHESS). MT acknowledges the Gates Cambridge Trust and the Winton Program for the Physics of Sustainability.
Identifiers
External DOI: https://doi.org/10.1021/acsenergylett.6b00678
This record's URL: https://www.repository.cam.ac.uk/handle/1810/263747
Rights
Licence:
http://www.rioxx.net/licenses/all-rights-reserved