Fabrication of the (Y<inf>2</inf>O<inf>3</inf>:Yb-Er)/Bi<inf>2</inf>S<inf>3</inf> composite film for near-infrared photoresponse

Jia, H; Ping, C; Xu, C; Zhou, J; Sang, X; Wang, J; Liu, C; Liu, X; Qiu, J

Fabrication of the (Y<inf>2</inf>O<inf>3</inf>:Yb-Er)/Bi<inf>2</inf>S<inf>3</inf> composite film for near-infrared photoresponse

Jia, H Ping, C Xu, C Zhou, J

Sang, X Wang, J Liu, C Liu, X Qiu, J

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Publication Type:: Journal Article
Citation:: Journal of Materials Chemistry A, 2015, 3 (11), pp. 5917 - 5922
Issue Date:: 2015-03-21

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Field	Value	Language
dc.contributor.author	Jia, H	en_US
dc.contributor.author	Ping, C	en_US
dc.contributor.author	Xu, C	en_US
dc.contributor.author	Zhou, J https://orcid.org/0000-0002-0605-5745	en_US
dc.contributor.author	Sang, X	en_US
dc.contributor.author	Wang, J	en_US
dc.contributor.author	Liu, C	en_US
dc.contributor.author	Liu, X	en_US
dc.contributor.author	Qiu, J	en_US
dc.date.issued	2015-03-21	en_US
dc.identifier.citation	Journal of Materials Chemistry A, 2015, 3 (11), pp. 5917 - 5922	en_US
dc.identifier.issn	2050-7488	en_US
dc.identifier.uri	http://hdl.handle.net/10453/116394
dc.description.abstract	© The Royal Society of Chemistry 2015. Harvest of near infrared (NIR) radiation in photovoltaic devices is highly desirable as it is recognized as a potential pathway to break the Shockley-Queisser limit of solar conversion efficiency. Here, (Y2O3:Yb-Er)/Bi2S3 composite films with photoactive current generation under NIR light excitation were fabricated by electro-deposition and a simple successive ionic layer adsorption and reaction (SILAR) method. The composite films consist of homogeneous crystalline particles of Y2O3 with a lamellar morphology covered by Bi2S3 nanoparticles. Upon excitation by a 980 nm laser, the Y2O3:Yb-Er layer in the composite film converts NIR photons into visible emissions through upconversion, which is absorbed by the covered Bi2S3 nanoparticles and leads to the generation of photoelectrons. With the use of a standard electrochemical cell where the composite film serves as the photoanode, we demonstrate robust photocurrent generation in aqueous solution. This study suggests a promising strategy for the harvesting of NIR radiation in solar cells, photocatalysts, and infrared photo-detectors.	en_US
dc.relation.ispartof	Journal of Materials Chemistry A	en_US
dc.relation.isbasedon	10.1039/c5ta00692a	en_US
dc.title	Fabrication of the (Y<inf>2</inf>O<inf>3</inf>:Yb-Er)/Bi<inf>2</inf>S<inf>3</inf> composite film for near-infrared photoresponse	en_US
dc.type	Journal Article
utslib.citation.volume	11	en_US
utslib.citation.volume	3	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	030304 Physical Chemistry of Materials	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0915 Interdisciplinary Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
utslib.copyright.status	closed_access
pubs.issue	11	en_US
pubs.publication-status	Published	en_US
pubs.volume	3	en_US

Abstract:

© The Royal Society of Chemistry 2015. Harvest of near infrared (NIR) radiation in photovoltaic devices is highly desirable as it is recognized as a potential pathway to break the Shockley-Queisser limit of solar conversion efficiency. Here, (Y2O3:Yb-Er)/Bi2S3 composite films with photoactive current generation under NIR light excitation were fabricated by electro-deposition and a simple successive ionic layer adsorption and reaction (SILAR) method. The composite films consist of homogeneous crystalline particles of Y2O3 with a lamellar morphology covered by Bi2S3 nanoparticles. Upon excitation by a 980 nm laser, the Y2O3:Yb-Er layer in the composite film converts NIR photons into visible emissions through upconversion, which is absorbed by the covered Bi2S3 nanoparticles and leads to the generation of photoelectrons. With the use of a standard electrochemical cell where the composite film serves as the photoanode, we demonstrate robust photocurrent generation in aqueous solution. This study suggests a promising strategy for the harvesting of NIR radiation in solar cells, photocatalysts, and infrared photo-detectors.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/116394