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Conference Paper: Titania nanotube array based photovoltaic cells

TitleTitania nanotube array based photovoltaic cells
Authors
KeywordsAnnealing
Dye sensitized solar cells
Titania
Issue Date2007
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, v. 6656, p. 665616: 1-11 How to Cite?
AbstractIt has been shown that dye sensitized solar cells (DSSCs) based on porous titanium dioxide (titania) layers have efficiencies exceeding 10%. Although porous structure has the advantage of large surface area for light harvesting, electron transport through the random nanoparticle network forming a porous film results in electron mobilities which are two orders of magnitude lower compared to the single crystal materials. Therefore, considerable efforts have been made to fabricate DSSC based on one dimensional nanostructures, such as nanowires or nanotubes. Titania nanotube arrays are typically made by anodization of titanium, followed by annealing to improve crystallinity. In this work, we investigated the influence of annealing temperature and annealing atmosphere on the crystal structure, the electron transport, and the solar cell performance of titania nanotube arrays. The titania nanotube arrays were prepared from electrochemically anodized titanium foils and their morphology and crystal structure were characterized by scanning electron microscopy and transmission electron microscopy. The crystal phases and the compositions of nanotube arrays were further investigated by X-ray diffraction for different annealing temperatures and X-ray photoelectron spectroscopy for different annealing atmospheres. For optimal annealing conditions, the short circuit current density of 4.27 mA/cm 2 and power conversion efficiency of 1.30% could be achieved under AM 1.5 simulated solar irradiation for 2 μm long nanotubes.
Persistent Identifierhttp://hdl.handle.net/10722/97144
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorYip, CTen_HK
dc.contributor.authorCheung, KYen_HK
dc.contributor.authorDjurišić, ABen_HK
dc.contributor.authorChan, WKen_HK
dc.date.accessioned2010-09-25T16:58:03Z-
dc.date.available2010-09-25T16:58:03Z-
dc.date.issued2007en_HK
dc.identifier.citationProceedings of SPIE, v. 6656, p. 665616: 1-11en_HK
dc.identifier.issn0277-786Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/97144-
dc.description.abstractIt has been shown that dye sensitized solar cells (DSSCs) based on porous titanium dioxide (titania) layers have efficiencies exceeding 10%. Although porous structure has the advantage of large surface area for light harvesting, electron transport through the random nanoparticle network forming a porous film results in electron mobilities which are two orders of magnitude lower compared to the single crystal materials. Therefore, considerable efforts have been made to fabricate DSSC based on one dimensional nanostructures, such as nanowires or nanotubes. Titania nanotube arrays are typically made by anodization of titanium, followed by annealing to improve crystallinity. In this work, we investigated the influence of annealing temperature and annealing atmosphere on the crystal structure, the electron transport, and the solar cell performance of titania nanotube arrays. The titania nanotube arrays were prepared from electrochemically anodized titanium foils and their morphology and crystal structure were characterized by scanning electron microscopy and transmission electron microscopy. The crystal phases and the compositions of nanotube arrays were further investigated by X-ray diffraction for different annealing temperatures and X-ray photoelectron spectroscopy for different annealing atmospheres. For optimal annealing conditions, the short circuit current density of 4.27 mA/cm 2 and power conversion efficiency of 1.30% could be achieved under AM 1.5 simulated solar irradiation for 2 μm long nanotubes.en_HK
dc.languageengen_HK
dc.publisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xmlen_HK
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineeringen_HK
dc.subjectAnnealingen_HK
dc.subjectDye sensitized solar cellsen_HK
dc.subjectTitaniaen_HK
dc.titleTitania nanotube array based photovoltaic cellsen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailDjurišić, AB: dalek@hku.hken_HK
dc.identifier.authorityDjurišić, AB=rp00690en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1117/12.732762en_HK
dc.identifier.scopuseid_2-s2.0-42149170552en_HK
dc.identifier.hkuros148827en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-42149170552&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume6656en_HK
dc.identifier.spage665616en_HK
dc.identifier.epage11en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYip, CT=55414930300en_HK
dc.identifier.scopusauthoridCheung, KY=25229974800en_HK
dc.identifier.scopusauthoridDjurišić, AB=7004904830en_HK
dc.identifier.scopusauthoridChan, WK=8059126200en_HK

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