Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing Alloy Pb(x)Cd(1−x)S Quantum Dots as Photosensitizers

Ternary alloy Pb(x)Cd(1−x)S quantum dots (QDs) were explored as photosensitizers for quantum-dot-sensitized solar cells (QDSCs). Alloy Pb(x)Cd(1−x)S QDs (Pb(0.54)Cd(0.46)S, Pb(0.31)Cd(0.69)S, and Pb(0.24)Cd(0.76)S) were found to substantially improve the photocurrent of the solar cells compared to t...

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Autores principales: Yuan, Chunze, Li, Lin, Huang, Jing, Ning, Zhijun, Sun, Licheng, Ågren, Hans
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5302620/
https://www.ncbi.nlm.nih.gov/pubmed/28335226
http://dx.doi.org/10.3390/nano6060097
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author Yuan, Chunze
Li, Lin
Huang, Jing
Ning, Zhijun
Sun, Licheng
Ågren, Hans
author_facet Yuan, Chunze
Li, Lin
Huang, Jing
Ning, Zhijun
Sun, Licheng
Ågren, Hans
author_sort Yuan, Chunze
collection PubMed
description Ternary alloy Pb(x)Cd(1−x)S quantum dots (QDs) were explored as photosensitizers for quantum-dot-sensitized solar cells (QDSCs). Alloy Pb(x)Cd(1−x)S QDs (Pb(0.54)Cd(0.46)S, Pb(0.31)Cd(0.69)S, and Pb(0.24)Cd(0.76)S) were found to substantially improve the photocurrent of the solar cells compared to the single CdS or PbS QDs. Moreover, it was found that the photocurrent increases and the photovoltage decreases when the ratio of Pb in Pb(x)Cd(1−x)S is increased. Without surface protecting layer deposition, the highest short-circuit current density reaches 20 mA/cm(2) under simulated AM 1.5 illumination (100 mW/cm(2)). After an additional CdS coating layer was deposited onto the Pb(x)Cd(1−x)S electrode, the photovoltaic performance further improved, with a photocurrent of 22.6 mA/cm(2) and an efficiency of 3.2%.
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spelling pubmed-53026202017-03-21 Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing Alloy Pb(x)Cd(1−x)S Quantum Dots as Photosensitizers Yuan, Chunze Li, Lin Huang, Jing Ning, Zhijun Sun, Licheng Ågren, Hans Nanomaterials (Basel) Article Ternary alloy Pb(x)Cd(1−x)S quantum dots (QDs) were explored as photosensitizers for quantum-dot-sensitized solar cells (QDSCs). Alloy Pb(x)Cd(1−x)S QDs (Pb(0.54)Cd(0.46)S, Pb(0.31)Cd(0.69)S, and Pb(0.24)Cd(0.76)S) were found to substantially improve the photocurrent of the solar cells compared to the single CdS or PbS QDs. Moreover, it was found that the photocurrent increases and the photovoltage decreases when the ratio of Pb in Pb(x)Cd(1−x)S is increased. Without surface protecting layer deposition, the highest short-circuit current density reaches 20 mA/cm(2) under simulated AM 1.5 illumination (100 mW/cm(2)). After an additional CdS coating layer was deposited onto the Pb(x)Cd(1−x)S electrode, the photovoltaic performance further improved, with a photocurrent of 22.6 mA/cm(2) and an efficiency of 3.2%. MDPI 2016-05-27 /pmc/articles/PMC5302620/ /pubmed/28335226 http://dx.doi.org/10.3390/nano6060097 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yuan, Chunze
Li, Lin
Huang, Jing
Ning, Zhijun
Sun, Licheng
Ågren, Hans
Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing Alloy Pb(x)Cd(1−x)S Quantum Dots as Photosensitizers
title Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing Alloy Pb(x)Cd(1−x)S Quantum Dots as Photosensitizers
title_full Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing Alloy Pb(x)Cd(1−x)S Quantum Dots as Photosensitizers
title_fullStr Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing Alloy Pb(x)Cd(1−x)S Quantum Dots as Photosensitizers
title_full_unstemmed Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing Alloy Pb(x)Cd(1−x)S Quantum Dots as Photosensitizers
title_short Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing Alloy Pb(x)Cd(1−x)S Quantum Dots as Photosensitizers
title_sort improving the photocurrent in quantum-dot-sensitized solar cells by employing alloy pb(x)cd(1−x)s quantum dots as photosensitizers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5302620/
https://www.ncbi.nlm.nih.gov/pubmed/28335226
http://dx.doi.org/10.3390/nano6060097
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