A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability

[Image: see text] 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 pre...

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Autores principales: Pazos-Outón, Luis M., Lee, Ju Min, Futscher, Moritz H., Kirch, Anton, Tabachnyk, Maxim, Friend, Richard H., Ehrler, Bruno
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5330651/
https://www.ncbi.nlm.nih.gov/pubmed/28261671
http://dx.doi.org/10.1021/acsenergylett.6b00678
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author Pazos-Outón, Luis M.
Lee, Ju Min
Futscher, Moritz H.
Kirch, Anton
Tabachnyk, Maxim
Friend, Richard H.
Ehrler, Bruno
author_facet Pazos-Outón, Luis M.
Lee, Ju Min
Futscher, Moritz H.
Kirch, Anton
Tabachnyk, Maxim
Friend, Richard H.
Ehrler, Bruno
author_sort Pazos-Outón, Luis M.
collection PubMed
description [Image: see text] 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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spelling pubmed-53306512017-03-02 A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability Pazos-Outón, Luis M. Lee, Ju Min Futscher, Moritz H. Kirch, Anton Tabachnyk, Maxim Friend, Richard H. Ehrler, Bruno ACS Energy Lett [Image: see text] 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. American Chemical Society 2017-01-25 2017-02-10 /pmc/articles/PMC5330651/ /pubmed/28261671 http://dx.doi.org/10.1021/acsenergylett.6b00678 Text en Copyright © 2017 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Pazos-Outón, Luis M.
Lee, Ju Min
Futscher, Moritz H.
Kirch, Anton
Tabachnyk, Maxim
Friend, Richard H.
Ehrler, Bruno
A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability
title A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability
title_full A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability
title_fullStr A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability
title_full_unstemmed A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability
title_short A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability
title_sort silicon–singlet fission tandem solar cell exceeding 100% external quantum efficiency with high spectral stability
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5330651/
https://www.ncbi.nlm.nih.gov/pubmed/28261671
http://dx.doi.org/10.1021/acsenergylett.6b00678
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