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Exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via ZnO nanoneedles

GaInP/GaAs/Ge triple-junction concentrator solar cells with significant efficiency enhancement were demonstrated with antireflective ZnO nanoneedles. The novel nanostructure was attained with a Zn(NO(3))(2)-based solution containing vitamin C. Under one sun AM 1.5G solar spectrum, conversion efficie...

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Detalles Bibliográficos
Autores principales: Yeh, Li-Ko, Tian, Wei-Cheng, Lai, Kun-Yu, He, Jr-Hau
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5155418/
https://www.ncbi.nlm.nih.gov/pubmed/27966621
http://dx.doi.org/10.1038/srep39134
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author Yeh, Li-Ko
Tian, Wei-Cheng
Lai, Kun-Yu
He, Jr-Hau
author_facet Yeh, Li-Ko
Tian, Wei-Cheng
Lai, Kun-Yu
He, Jr-Hau
author_sort Yeh, Li-Ko
collection PubMed
description GaInP/GaAs/Ge triple-junction concentrator solar cells with significant efficiency enhancement were demonstrated with antireflective ZnO nanoneedles. The novel nanostructure was attained with a Zn(NO(3))(2)-based solution containing vitamin C. Under one sun AM 1.5G solar spectrum, conversion efficiency of the triple-junction device was improved by 23.7% via broadband improvement in short-circuit currents of 3 sub-cells after the coverage by the nanoneedles with a graded refractive index profile. The efficiency enhancement further went up to 45.8% at 100 suns. The performance boost through the nanoneedles also became increasingly pronounced in the conditions of high incident angles and the cloudy weather, e.g. 220.0% of efficiency enhancement was observed at the incident angle of 60°. These results were attributed to the exceptional broadband omnidirectionality of the antireflective nanoneedles.
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spelling pubmed-51554182016-12-20 Exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via ZnO nanoneedles Yeh, Li-Ko Tian, Wei-Cheng Lai, Kun-Yu He, Jr-Hau Sci Rep Article GaInP/GaAs/Ge triple-junction concentrator solar cells with significant efficiency enhancement were demonstrated with antireflective ZnO nanoneedles. The novel nanostructure was attained with a Zn(NO(3))(2)-based solution containing vitamin C. Under one sun AM 1.5G solar spectrum, conversion efficiency of the triple-junction device was improved by 23.7% via broadband improvement in short-circuit currents of 3 sub-cells after the coverage by the nanoneedles with a graded refractive index profile. The efficiency enhancement further went up to 45.8% at 100 suns. The performance boost through the nanoneedles also became increasingly pronounced in the conditions of high incident angles and the cloudy weather, e.g. 220.0% of efficiency enhancement was observed at the incident angle of 60°. These results were attributed to the exceptional broadband omnidirectionality of the antireflective nanoneedles. Nature Publishing Group 2016-12-14 /pmc/articles/PMC5155418/ /pubmed/27966621 http://dx.doi.org/10.1038/srep39134 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Yeh, Li-Ko
Tian, Wei-Cheng
Lai, Kun-Yu
He, Jr-Hau
Exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via ZnO nanoneedles
title Exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via ZnO nanoneedles
title_full Exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via ZnO nanoneedles
title_fullStr Exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via ZnO nanoneedles
title_full_unstemmed Exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via ZnO nanoneedles
title_short Exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via ZnO nanoneedles
title_sort exceptionally omnidirectional broadband light harvesting scheme for multi-junction concentrator solar cells achieved via zno nanoneedles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5155418/
https://www.ncbi.nlm.nih.gov/pubmed/27966621
http://dx.doi.org/10.1038/srep39134
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