Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layer

Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layer

<p>Abstract</p> <p>We improve the conversion efficiency of Ag<sub>2</sub>S quantum dot (QD)-sensitized TiO<sub>2 </sub>nanotube-array electrodes by chemically depositing ZnO recombination barrier layer on plain TiO<sub>2 </sub>nanotube-array elec...

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Main Authors: Chen Chong, Xie Yi, Ali Ghafar, Yoo Seung, Cho Sung
Format: Article
Language:English
Published: SpringerOpen 2011-01-01
Series:Nanoscale Research Letters
Subjects:
quantum dots
TiO<sub>2 </sub>nanotube
Ag<sub>2</sub>S
solar cells
Online Access:http://www.nanoscalereslett.com/content/6/1/462
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spelling doaj-519dbcb8f5224437b999d516dc51501e2020-11-24T20:55:59ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2011-01-0161462Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layerChen ChongXie YiAli GhafarYoo SeungCho Sung<p>Abstract</p> <p>We improve the conversion efficiency of Ag<sub>2</sub>S quantum dot (QD)-sensitized TiO<sub>2 </sub>nanotube-array electrodes by chemically depositing ZnO recombination barrier layer on plain TiO<sub>2 </sub>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<sub>2</sub>S deposition, the photocurrent density and the conversion efficiency increase. In addition, as compared to the Ag<sub>2</sub>S QD-sensitized TiO<sub>2 </sub>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<sub>2 </sub>nanotube array and electrolyte.</p> http://www.nanoscalereslett.com/content/6/1/462quantum dotsTiO<sub>2 </sub>nanotubeAg<sub>2</sub>Ssolar cells
collection DOAJ
language English
format Article
sources DOAJ
author Chen Chong
Xie Yi
Ali Ghafar
Yoo Seung
Cho Sung
spellingShingle Chen Chong
Xie Yi
Ali Ghafar
Yoo Seung
Cho Sung
Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layer
Nanoscale Research Letters
quantum dots
TiO<sub>2 </sub>nanotube
Ag<sub>2</sub>S
solar cells
author_facet Chen Chong
Xie Yi
Ali Ghafar
Yoo Seung
Cho Sung
author_sort Chen Chong
title Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layer
title_short Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layer
title_full Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layer
title_fullStr Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layer
title_full_unstemmed Improved conversion efficiency of Ag<sub>2</sub>S quantum dot-sensitized solar cells based on TiO<sub>2 </sub>nanotubes with a ZnO recombination barrier layer
title_sort improved conversion efficiency of ag<sub>2</sub>s quantum dot-sensitized solar cells based on tio<sub>2 </sub>nanotubes with a zno recombination barrier layer
publisher SpringerOpen
series Nanoscale Research Letters
issn 1931-7573
1556-276X
publishDate 2011-01-01
description <p>Abstract</p> <p>We improve the conversion efficiency of Ag<sub>2</sub>S quantum dot (QD)-sensitized TiO<sub>2 </sub>nanotube-array electrodes by chemically depositing ZnO recombination barrier layer on plain TiO<sub>2 </sub>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<sub>2</sub>S deposition, the photocurrent density and the conversion efficiency increase. In addition, as compared to the Ag<sub>2</sub>S QD-sensitized TiO<sub>2 </sub>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<sub>2 </sub>nanotube array and electrolyte.</p>
topic quantum dots
TiO<sub>2 </sub>nanotube
Ag<sub>2</sub>S
solar cells
url http://www.nanoscalereslett.com/content/6/1/462
work_keys_str_mv AT chenchong improvedconversionefficiencyofagsub2subsquantumdotsensitizedsolarcellsbasedontiosub2subnanotubeswithaznorecombinationbarrierlayer
AT xieyi improvedconversionefficiencyofagsub2subsquantumdotsensitizedsolarcellsbasedontiosub2subnanotubeswithaznorecombinationbarrierlayer
AT alighafar improvedconversionefficiencyofagsub2subsquantumdotsensitizedsolarcellsbasedontiosub2subnanotubeswithaznorecombinationbarrierlayer
AT yooseung improvedconversionefficiencyofagsub2subsquantumdotsensitizedsolarcellsbasedontiosub2subnanotubeswithaznorecombinationbarrierlayer
AT chosung improvedconversionefficiencyofagsub2subsquantumdotsensitizedsolarcellsbasedontiosub2subnanotubeswithaznorecombinationbarrierlayer
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