A Silicon–Singlet Fission Tandem Solar Cell
Exceeding 100% External Quantum Efficiency with High Spectral Stability
Version 3 2017-05-17, 13:36
Version 2 2017-02-27, 14:53
Version 1 2017-01-31, 15:35
Posted on 2017-05-17 - 13:36
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.
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Pazos-Outón, Luis M.; Lee, Ju Min; Futscher, Moritz H.; Kirch, Anton; Tabachnyk, Maxim; Friend, Richard H.; et al. (2017). A Silicon–Singlet Fission Tandem Solar Cell
Exceeding 100% External Quantum Efficiency with High Spectral Stability. ACS Publications. Collection. https://doi.org/10.1021/acsenergylett.6b00678
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AUTHORS (7)
LP
Luis M. Pazos-Outón
JL
Ju Min Lee
MF
Moritz H. Futscher
AK
Anton Kirch
MT
Maxim Tabachnyk
RF
Richard H. Friend
BE
Bruno Ehrler