Improved conversion efficiency of Ag(2)S quantum dot-sensitized solar cells based on TiO(2 )nanotubes with a ZnO recombination barrier layer

We improve the conversion efficiency of Ag(2)S quantum dot (QD)-sensitized TiO(2 )nanotube-array electrodes by chemically depositing ZnO recombination barrier layer on plain TiO(2 )nanotube-array electrodes. The optical properties, structural properties, compositional analysis, and photoelectrochemi...

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Autores principales: Chen, Chong, Xie, Yi, Ali, Ghafar, Yoo, Seung Hwa, Cho, Sung Oh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2011
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3211883/
https://www.ncbi.nlm.nih.gov/pubmed/21777458
http://dx.doi.org/10.1186/1556-276X-6-462
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author Chen, Chong
Xie, Yi
Ali, Ghafar
Yoo, Seung Hwa
Cho, Sung Oh
author_facet Chen, Chong
Xie, Yi
Ali, Ghafar
Yoo, Seung Hwa
Cho, Sung Oh
author_sort Chen, Chong
collection PubMed
description We improve the conversion efficiency of Ag(2)S quantum dot (QD)-sensitized TiO(2 )nanotube-array electrodes by chemically depositing ZnO recombination barrier layer on plain TiO(2 )nanotube-array electrodes. The optical properties, structural properties, compositional analysis, and photoelectrochemistry properties of prepared electrodes have been investigated. It is found that for the prepared electrodes, with increasing the cycles of Ag(2)S deposition, the photocurrent density and the conversion efficiency increase. In addition, as compared to the Ag(2)S QD-sensitized TiO(2 )nanotube-array electrode without the ZnO layers, the conversion efficiency of the electrode with the ZnO layers increases significantly due to the formation of efficient recombination layer between the TiO(2 )nanotube array and electrolyte.
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spelling pubmed-32118832011-11-09 Improved conversion efficiency of Ag(2)S quantum dot-sensitized solar cells based on TiO(2 )nanotubes with a ZnO recombination barrier layer Chen, Chong Xie, Yi Ali, Ghafar Yoo, Seung Hwa Cho, Sung Oh Nanoscale Res Lett Nano Express We improve the conversion efficiency of Ag(2)S quantum dot (QD)-sensitized TiO(2 )nanotube-array electrodes by chemically depositing ZnO recombination barrier layer on plain TiO(2 )nanotube-array electrodes. The optical properties, structural properties, compositional analysis, and photoelectrochemistry properties of prepared electrodes have been investigated. It is found that for the prepared electrodes, with increasing the cycles of Ag(2)S deposition, the photocurrent density and the conversion efficiency increase. In addition, as compared to the Ag(2)S QD-sensitized TiO(2 )nanotube-array electrode without the ZnO layers, the conversion efficiency of the electrode with the ZnO layers increases significantly due to the formation of efficient recombination layer between the TiO(2 )nanotube array and electrolyte. Springer 2011-07-21 /pmc/articles/PMC3211883/ /pubmed/21777458 http://dx.doi.org/10.1186/1556-276X-6-462 Text en Copyright ©2011 Chen et al; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Chen, Chong
Xie, Yi
Ali, Ghafar
Yoo, Seung Hwa
Cho, Sung Oh
Improved conversion efficiency of Ag(2)S quantum dot-sensitized solar cells based on TiO(2 )nanotubes with a ZnO recombination barrier layer
title Improved conversion efficiency of Ag(2)S quantum dot-sensitized solar cells based on TiO(2 )nanotubes with a ZnO recombination barrier layer
title_full Improved conversion efficiency of Ag(2)S quantum dot-sensitized solar cells based on TiO(2 )nanotubes with a ZnO recombination barrier layer
title_fullStr Improved conversion efficiency of Ag(2)S quantum dot-sensitized solar cells based on TiO(2 )nanotubes with a ZnO recombination barrier layer
title_full_unstemmed Improved conversion efficiency of Ag(2)S quantum dot-sensitized solar cells based on TiO(2 )nanotubes with a ZnO recombination barrier layer
title_short Improved conversion efficiency of Ag(2)S quantum dot-sensitized solar cells based on TiO(2 )nanotubes with a ZnO recombination barrier layer
title_sort improved conversion efficiency of ag(2)s quantum dot-sensitized solar cells based on tio(2 )nanotubes with a zno recombination barrier layer
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3211883/
https://www.ncbi.nlm.nih.gov/pubmed/21777458
http://dx.doi.org/10.1186/1556-276X-6-462
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