Influence of carbon nanotubes in gel electrolyte on photovoltaic performance of ZnO dye-sensitized solar cells

In this work, the poly(ethylene glycol) (PEG) gel polymer electrolyte was used to replace the liquid electrolyte in dye-sensitized solar cells (DSSCs) in order to overcome the issues of evaporation, leak of liquid, and stability. However, the PEG gel polymer electrolyte-ZnO based cells have low curr...

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Main Authors: Khongchareon N., Choopun S., Hongsith N., Gardchareon A., Phadungdhitidhada S., Wongratanaphisan D.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-84879232266&partnerID=40&md5=7394d7af7d53ef7127aebff17e206906
http://cmuir.cmu.ac.th/handle/6653943832/7074
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spelling th-cmuir.6653943832-70742014-08-30T03:51:33Z Influence of carbon nanotubes in gel electrolyte on photovoltaic performance of ZnO dye-sensitized solar cells Khongchareon N. Choopun S. Hongsith N. Gardchareon A. Phadungdhitidhada S. Wongratanaphisan D. In this work, the poly(ethylene glycol) (PEG) gel polymer electrolyte was used to replace the liquid electrolyte in dye-sensitized solar cells (DSSCs) in order to overcome the issues of evaporation, leak of liquid, and stability. However, the PEG gel polymer electrolyte-ZnO based cells have low current density and fill factor. Then, the effect of addition of multi-walled carbon nanotubes (MWCNTs) in different wt% into the PEG gel polymer electrolyte was also investigated. Current density-voltage characteristics and electrochemical impedance spectroscopy showed that use of the MWCNTs with the PEG gel polymer electrolyte increases current density and fill factor. Highest efficiency of 0.75% was achieved with 5 wt% of the MWCNTs in the PEG gel polymer electrolyte. The enhancement of efficiency can be attributed to the suppression of charge transfer resistance at the ZnO photoelectrode/electrolyte interface, whereas the proper introduction of MWCNTs effectively decreases the charge recombination as confirmed by electrochemical impedance spectra. In case of stability, the devices sustained for 1006 h also maintained over 85% of its initial performance. © 2013 Elsevier Ltd. All rights reserved. 2014-08-30T03:51:33Z 2014-08-30T03:51:33Z 2013 Article 00134686 10.1016/j.electacta.2013.05.096 ELCAA http://www.scopus.com/inward/record.url?eid=2-s2.0-84879232266&partnerID=40&md5=7394d7af7d53ef7127aebff17e206906 http://cmuir.cmu.ac.th/handle/6653943832/7074 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description In this work, the poly(ethylene glycol) (PEG) gel polymer electrolyte was used to replace the liquid electrolyte in dye-sensitized solar cells (DSSCs) in order to overcome the issues of evaporation, leak of liquid, and stability. However, the PEG gel polymer electrolyte-ZnO based cells have low current density and fill factor. Then, the effect of addition of multi-walled carbon nanotubes (MWCNTs) in different wt% into the PEG gel polymer electrolyte was also investigated. Current density-voltage characteristics and electrochemical impedance spectroscopy showed that use of the MWCNTs with the PEG gel polymer electrolyte increases current density and fill factor. Highest efficiency of 0.75% was achieved with 5 wt% of the MWCNTs in the PEG gel polymer electrolyte. The enhancement of efficiency can be attributed to the suppression of charge transfer resistance at the ZnO photoelectrode/electrolyte interface, whereas the proper introduction of MWCNTs effectively decreases the charge recombination as confirmed by electrochemical impedance spectra. In case of stability, the devices sustained for 1006 h also maintained over 85% of its initial performance. © 2013 Elsevier Ltd. All rights reserved.
format Article
author Khongchareon N.
Choopun S.
Hongsith N.
Gardchareon A.
Phadungdhitidhada S.
Wongratanaphisan D.
spellingShingle Khongchareon N.
Choopun S.
Hongsith N.
Gardchareon A.
Phadungdhitidhada S.
Wongratanaphisan D.
Influence of carbon nanotubes in gel electrolyte on photovoltaic performance of ZnO dye-sensitized solar cells
author_facet Khongchareon N.
Choopun S.
Hongsith N.
Gardchareon A.
Phadungdhitidhada S.
Wongratanaphisan D.
author_sort Khongchareon N.
title Influence of carbon nanotubes in gel electrolyte on photovoltaic performance of ZnO dye-sensitized solar cells
title_short Influence of carbon nanotubes in gel electrolyte on photovoltaic performance of ZnO dye-sensitized solar cells
title_full Influence of carbon nanotubes in gel electrolyte on photovoltaic performance of ZnO dye-sensitized solar cells
title_fullStr Influence of carbon nanotubes in gel electrolyte on photovoltaic performance of ZnO dye-sensitized solar cells
title_full_unstemmed Influence of carbon nanotubes in gel electrolyte on photovoltaic performance of ZnO dye-sensitized solar cells
title_sort influence of carbon nanotubes in gel electrolyte on photovoltaic performance of zno dye-sensitized solar cells
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-84879232266&partnerID=40&md5=7394d7af7d53ef7127aebff17e206906
http://cmuir.cmu.ac.th/handle/6653943832/7074
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