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Increased upconversion performance for thin film solar cells: a trimolecular composition

Photochemical upconversion based on triplet–triplet annihilation (TTA-UC) is employed to enhance the short-circuit currents generated by two varieties of thin-film solar cells, a hydrogenated amorphous silicon (a-Si:H) solar cell and a dye-sensitized solar cell (DSC). TTA-UC is exploited to harvest...

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Autores principales: Cheng, Yuen Yap, Nattestad, Andrew, Schulze, Tim F., MacQueen, Rowan W., Fückel, Burkhard, Lips, Klaus, Wallace, Gordon G., Khoury, Tony, Crossley, Maxwell J., Schmidt, Timothy W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5519954/
https://www.ncbi.nlm.nih.gov/pubmed/28791105
http://dx.doi.org/10.1039/c5sc03215f
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author Cheng, Yuen Yap
Nattestad, Andrew
Schulze, Tim F.
MacQueen, Rowan W.
Fückel, Burkhard
Lips, Klaus
Wallace, Gordon G.
Khoury, Tony
Crossley, Maxwell J.
Schmidt, Timothy W.
author_facet Cheng, Yuen Yap
Nattestad, Andrew
Schulze, Tim F.
MacQueen, Rowan W.
Fückel, Burkhard
Lips, Klaus
Wallace, Gordon G.
Khoury, Tony
Crossley, Maxwell J.
Schmidt, Timothy W.
author_sort Cheng, Yuen Yap
collection PubMed
description Photochemical upconversion based on triplet–triplet annihilation (TTA-UC) is employed to enhance the short-circuit currents generated by two varieties of thin-film solar cells, a hydrogenated amorphous silicon (a-Si:H) solar cell and a dye-sensitized solar cell (DSC). TTA-UC is exploited to harvest transmitted sub-bandgap photons, combine their energies and re-radiate upconverted photons back towards the solar cells. In the present study we employ a dual-emitter TTA-UC system which allows for significantly improved UC quantum yields as compared to the previously used single-emitter TTA systems. In doing so we achieve record photo-current enhancement values for both the a-Si:H device and the DSC, surpassing 10(–3) mA cm(–2) sun(–2) for the first time for a TTA-UC system and marking a record for upconversion-enhanced solar cells in general. We discuss pertinent challenges of the TTA-UC technology which need to be addressed in order to achieve its viable device application.
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spelling pubmed-55199542017-08-08 Increased upconversion performance for thin film solar cells: a trimolecular composition Cheng, Yuen Yap Nattestad, Andrew Schulze, Tim F. MacQueen, Rowan W. Fückel, Burkhard Lips, Klaus Wallace, Gordon G. Khoury, Tony Crossley, Maxwell J. Schmidt, Timothy W. Chem Sci Chemistry Photochemical upconversion based on triplet–triplet annihilation (TTA-UC) is employed to enhance the short-circuit currents generated by two varieties of thin-film solar cells, a hydrogenated amorphous silicon (a-Si:H) solar cell and a dye-sensitized solar cell (DSC). TTA-UC is exploited to harvest transmitted sub-bandgap photons, combine their energies and re-radiate upconverted photons back towards the solar cells. In the present study we employ a dual-emitter TTA-UC system which allows for significantly improved UC quantum yields as compared to the previously used single-emitter TTA systems. In doing so we achieve record photo-current enhancement values for both the a-Si:H device and the DSC, surpassing 10(–3) mA cm(–2) sun(–2) for the first time for a TTA-UC system and marking a record for upconversion-enhanced solar cells in general. We discuss pertinent challenges of the TTA-UC technology which need to be addressed in order to achieve its viable device application. Royal Society of Chemistry 2016-01-01 2015-10-09 /pmc/articles/PMC5519954/ /pubmed/28791105 http://dx.doi.org/10.1039/c5sc03215f Text en This journal is © The Royal Society of Chemistry 2015 http://creativecommons.org/licenses/by/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License (http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Chemistry
Cheng, Yuen Yap
Nattestad, Andrew
Schulze, Tim F.
MacQueen, Rowan W.
Fückel, Burkhard
Lips, Klaus
Wallace, Gordon G.
Khoury, Tony
Crossley, Maxwell J.
Schmidt, Timothy W.
Increased upconversion performance for thin film solar cells: a trimolecular composition
title Increased upconversion performance for thin film solar cells: a trimolecular composition
title_full Increased upconversion performance for thin film solar cells: a trimolecular composition
title_fullStr Increased upconversion performance for thin film solar cells: a trimolecular composition
title_full_unstemmed Increased upconversion performance for thin film solar cells: a trimolecular composition
title_short Increased upconversion performance for thin film solar cells: a trimolecular composition
title_sort increased upconversion performance for thin film solar cells: a trimolecular composition
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5519954/
https://www.ncbi.nlm.nih.gov/pubmed/28791105
http://dx.doi.org/10.1039/c5sc03215f
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