Zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells

ZnO nanostructures were prepared by thermal oxidation technique for applying as ethanol sensors and dye-sensitized solar cells. To improve sensitivity of the sensor based on ZnO nanostructures, gold doping was performed in ZnO nanostructures. Gold-doped with 0%, 5%, and 10% by weight were investigat...

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Main Authors: Supab Choopun, Auttasit Tubtimtae, Theerapong Santhaveesuk, Sanpet Nilphai, Ekasiddh Wongrat, Niyom Hongsith
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/49187
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-491872018-08-16T02:11:25Z Zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells Supab Choopun Auttasit Tubtimtae Theerapong Santhaveesuk Sanpet Nilphai Ekasiddh Wongrat Niyom Hongsith Materials Science ZnO nanostructures were prepared by thermal oxidation technique for applying as ethanol sensors and dye-sensitized solar cells. To improve sensitivity of the sensor based on ZnO nanostructures, gold doping was performed in ZnO nanostructures. Gold-doped with 0%, 5%, and 10% by weight were investigated. The improvement of sensor sensitivity toward ethanol due to gold doping was observed at entire operating temperature and ethanol concentration. The sensitivity up to 145 was obtained for 10% Au-doped ZnO sensor. This can be explained by an increase of the quantity of oxygen ion due to catalytic effect of gold. Also, it was found that oxygen ion species at the surface of the Au-doped ZnO sensor remained O2- as pure ZnO sensor. For dye-sensitized solar cell application, the dye-sensitized solar cell structure based on ZnO as a photoelectrode was FTO/ZnO/Eosin-Y/electrolyte/Pt counter electrode. ZnO with different morphologies of nanobelt, nano-tetrapod, and powder were investigated. It was found that DSSCs with ZnO powder showed higher photocurrent, photovoltage and overall energy conversion efficiencies than that of ZnO nanobelt and ZnO nano-tetrapod. The best results of DSSCs were the short circuit current (Jsc) of 1.25 mA/cm2, the open circuit voltage (Voc) of 0.45 V, the fill factor (FF) of 0.65 and the overall energy conversion efficiency (η) of 0.68%. © 2009 Elsevier B.V. All rights reserved. 2018-08-16T02:11:25Z 2018-08-16T02:11:25Z 2009-11-30 Journal 01694332 2-s2.0-70949085177 10.1016/j.apsusc.2009.05.139 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=70949085177&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49187
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Materials Science
spellingShingle Materials Science
Supab Choopun
Auttasit Tubtimtae
Theerapong Santhaveesuk
Sanpet Nilphai
Ekasiddh Wongrat
Niyom Hongsith
Zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells
description ZnO nanostructures were prepared by thermal oxidation technique for applying as ethanol sensors and dye-sensitized solar cells. To improve sensitivity of the sensor based on ZnO nanostructures, gold doping was performed in ZnO nanostructures. Gold-doped with 0%, 5%, and 10% by weight were investigated. The improvement of sensor sensitivity toward ethanol due to gold doping was observed at entire operating temperature and ethanol concentration. The sensitivity up to 145 was obtained for 10% Au-doped ZnO sensor. This can be explained by an increase of the quantity of oxygen ion due to catalytic effect of gold. Also, it was found that oxygen ion species at the surface of the Au-doped ZnO sensor remained O2- as pure ZnO sensor. For dye-sensitized solar cell application, the dye-sensitized solar cell structure based on ZnO as a photoelectrode was FTO/ZnO/Eosin-Y/electrolyte/Pt counter electrode. ZnO with different morphologies of nanobelt, nano-tetrapod, and powder were investigated. It was found that DSSCs with ZnO powder showed higher photocurrent, photovoltage and overall energy conversion efficiencies than that of ZnO nanobelt and ZnO nano-tetrapod. The best results of DSSCs were the short circuit current (Jsc) of 1.25 mA/cm2, the open circuit voltage (Voc) of 0.45 V, the fill factor (FF) of 0.65 and the overall energy conversion efficiency (η) of 0.68%. © 2009 Elsevier B.V. All rights reserved.
format Journal
author Supab Choopun
Auttasit Tubtimtae
Theerapong Santhaveesuk
Sanpet Nilphai
Ekasiddh Wongrat
Niyom Hongsith
author_facet Supab Choopun
Auttasit Tubtimtae
Theerapong Santhaveesuk
Sanpet Nilphai
Ekasiddh Wongrat
Niyom Hongsith
author_sort Supab Choopun
title Zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells
title_short Zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells
title_full Zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells
title_fullStr Zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells
title_full_unstemmed Zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells
title_sort zinc oxide nanostructures for applications as ethanol sensors and dye-sensitized solar cells
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=70949085177&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/49187
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