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Conference Paper: Influence of defects in ZnO nanomaterials on the performance of dyesensitized solar cell and photocatalytic activity

TitleInfluence of defects in ZnO nanomaterials on the performance of dyesensitized solar cell and photocatalytic activity
Authors
KeywordsDefects
Dssc
Photocatalysis
Zno
Issue Date2013
PublisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml
Citation
Proceedings Of Spie - The International Society For Optical Engineering, 2013, v. 8626 How to Cite?
AbstractZnO as a wide band gap semiconductor is of significant interest for various applications, including dye-sensitized solar cell (DSSC) and photocatalytic degradation of organic pollutants. For DSSC, although the performance of ZnO-based devices is generally inferior to TiO2-based ones, it is still of interest due to its high electron mobility. While the relationship between the material and the device performance are complicated, many studies have been focused on morphologies and surface area of the nanomaterials. The studies of the effect of the material properties such as the types and concentrations of native defects on the DSSC performance have been scarce. For photocatalytic degradation of pollutants, many reports showed ZnO has a higher or similar efficiency compared to the commonly used TiO2. Reports have also pointed out the important role of native defects of ZnO in its photocatalytic activity. Nevertheless, the effect of the type and location of the defects has been contradictory in the literature indicating that there is a complex relationship. Therefore, we will discuss the effect of ZnO native defects on the dye adsorption, charge transport and hence the DSSC performance. We will also discuss their influence on reactive oxygen species (ROS) generation and photocatalytic dye degradation. As photoluminescence (PL) is a common methodology in studying native defects of ZnO, the relationship between PL, DSSC performance and photocatalytic properties will also be investigated. Preliminary results showed a higher overall PL intensity would result in a better device performance and higher photocatalytic activities. © 2013 SPIE.
Persistent Identifierhttp://hdl.handle.net/10722/185489
ISSN
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGuo, MYen_US
dc.contributor.authorNg, AMCen_US
dc.contributor.authorLiu, FZen_US
dc.contributor.authorLeung, YHen_US
dc.contributor.authorWong, KKen_US
dc.contributor.authorNg, Aen_US
dc.contributor.authorNg, YHen_US
dc.contributor.authorWang, Gen_US
dc.contributor.authorDjurišić, ABen_US
dc.contributor.authorChan, WKen_US
dc.date.accessioned2013-07-30T07:39:10Z-
dc.date.available2013-07-30T07:39:10Z-
dc.date.issued2013en_US
dc.identifier.citationProceedings Of Spie - The International Society For Optical Engineering, 2013, v. 8626en_US
dc.identifier.issn0277-786Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/185489-
dc.description.abstractZnO as a wide band gap semiconductor is of significant interest for various applications, including dye-sensitized solar cell (DSSC) and photocatalytic degradation of organic pollutants. For DSSC, although the performance of ZnO-based devices is generally inferior to TiO2-based ones, it is still of interest due to its high electron mobility. While the relationship between the material and the device performance are complicated, many studies have been focused on morphologies and surface area of the nanomaterials. The studies of the effect of the material properties such as the types and concentrations of native defects on the DSSC performance have been scarce. For photocatalytic degradation of pollutants, many reports showed ZnO has a higher or similar efficiency compared to the commonly used TiO2. Reports have also pointed out the important role of native defects of ZnO in its photocatalytic activity. Nevertheless, the effect of the type and location of the defects has been contradictory in the literature indicating that there is a complex relationship. Therefore, we will discuss the effect of ZnO native defects on the dye adsorption, charge transport and hence the DSSC performance. We will also discuss their influence on reactive oxygen species (ROS) generation and photocatalytic dye degradation. As photoluminescence (PL) is a common methodology in studying native defects of ZnO, the relationship between PL, DSSC performance and photocatalytic properties will also be investigated. Preliminary results showed a higher overall PL intensity would result in a better device performance and higher photocatalytic activities. © 2013 SPIE.en_US
dc.languageengen_US
dc.publisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xmlen_US
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineeringen_US
dc.subjectDefectsen_US
dc.subjectDsscen_US
dc.subjectPhotocatalysisen_US
dc.subjectZnoen_US
dc.titleInfluence of defects in ZnO nanomaterials on the performance of dyesensitized solar cell and photocatalytic activityen_US
dc.typeConference_Paperen_US
dc.identifier.emailDjurišić, AB: dalek@hku.hken_US
dc.identifier.authorityDjurišić, AB=rp00690en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1117/12.2002976en_US
dc.identifier.scopuseid_2-s2.0-84878187796en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84878187796&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume8626en_US
dc.identifier.isiWOS:000325342500022-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridGuo, MY=41761700900en_US
dc.identifier.scopusauthoridNg, AMC=12140078600en_US
dc.identifier.scopusauthoridLiu, FZ=55599086400en_US
dc.identifier.scopusauthoridLeung, YH=55440652500en_US
dc.identifier.scopusauthoridWong, KK=37056419600en_US
dc.identifier.scopusauthoridNg, A=55549733500en_US
dc.identifier.scopusauthoridNg, YH=55154006100en_US
dc.identifier.scopusauthoridWang, G=55747442200en_US
dc.identifier.scopusauthoridDjurišić, AB=7004904830en_US
dc.identifier.scopusauthoridChan, WK=55746650000en_US

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