Visible-light activated ZnO/CdSe heterostructure-based gas sensors with low operating temperature

⿢The ZnO/CdSe based sensors worked in low temperature.⿢The optimum operating temperature of 160°C is 100°C lower than that of ZnO.⿢The sensitivity was 20-fold higher in dark than that of ZnO.⿢The sensitivity was 3-fold higher under illumination than that of ZnO. Three-dimensional ZnO/CdSe heterostru...

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Veröffentlicht in:	Applied surface science 2016-01, Vol.360, p.652-657
Hauptverfasser:	Wu, Bin, Lin, Zhangqing, Sheng, Minqi, Hou, Songyan, Xu, Jifang
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Sprache:	eng
Schlagworte:	Activated Cadmium selenides Gas sensor Gas sensors Heterostructures Intermetallics Light (illumination) Low operating temperature Operating temperature Visible light illumination Zinc oxide ZnO/CdSe
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creator	Wu, Bin Lin, Zhangqing Sheng, Minqi Hou, Songyan Xu, Jifang
description	⿢The ZnO/CdSe based sensors worked in low temperature.⿢The optimum operating temperature of 160°C is 100°C lower than that of ZnO.⿢The sensitivity was 20-fold higher in dark than that of ZnO.⿢The sensitivity was 3-fold higher under illumination than that of ZnO. Three-dimensional ZnO/CdSe heterostructure (ZnO/CdSe HS) was fabricated with large scale and its gas-sensing application with low operating temperature was explored. Combining cost-effective chemical vapor deposition with solution growth methods, ZnO nanorods were grown on the surface of CdSe nanoribbons. Scanning electron microscopy, X-ray diffraction and transmission electron microscopy were employed to confirm the formation of ZnO/CdSe HS. The ZnO/CdSe HSs were fabricated as gas sensors in the detection of ethanol at the optimum operating temperature of 160°C. Compared with ZnO-based gas sensors, the optimum operating temperature of the ZnO/CdSe HS-based sensor was approximately 100°C lower, while the sensitivity was 20-fold higher in the dark and 3-fold higher under visible light illumination condition. The enhancement of sensing properties was attributed to the advanced heterostructure and visible light activated CdSe.
doi_str_mv	10.1016/j.apsusc.2015.11.037
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Three-dimensional ZnO/CdSe heterostructure (ZnO/CdSe HS) was fabricated with large scale and its gas-sensing application with low operating temperature was explored. Combining cost-effective chemical vapor deposition with solution growth methods, ZnO nanorods were grown on the surface of CdSe nanoribbons. Scanning electron microscopy, X-ray diffraction and transmission electron microscopy were employed to confirm the formation of ZnO/CdSe HS. The ZnO/CdSe HSs were fabricated as gas sensors in the detection of ethanol at the optimum operating temperature of 160°C. Compared with ZnO-based gas sensors, the optimum operating temperature of the ZnO/CdSe HS-based sensor was approximately 100°C lower, while the sensitivity was 20-fold higher in the dark and 3-fold higher under visible light illumination condition. 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Three-dimensional ZnO/CdSe heterostructure (ZnO/CdSe HS) was fabricated with large scale and its gas-sensing application with low operating temperature was explored. Combining cost-effective chemical vapor deposition with solution growth methods, ZnO nanorods were grown on the surface of CdSe nanoribbons. Scanning electron microscopy, X-ray diffraction and transmission electron microscopy were employed to confirm the formation of ZnO/CdSe HS. The ZnO/CdSe HSs were fabricated as gas sensors in the detection of ethanol at the optimum operating temperature of 160°C. Compared with ZnO-based gas sensors, the optimum operating temperature of the ZnO/CdSe HS-based sensor was approximately 100°C lower, while the sensitivity was 20-fold higher in the dark and 3-fold higher under visible light illumination condition. The enhancement of sensing properties was attributed to the advanced heterostructure and visible light activated CdSe.</description><subject>Activated</subject><subject>Cadmium selenides</subject><subject>Gas sensor</subject><subject>Gas sensors</subject><subject>Heterostructures</subject><subject>Intermetallics</subject><subject>Light (illumination)</subject><subject>Low operating temperature</subject><subject>Operating temperature</subject><subject>Visible light illumination</subject><subject>Zinc oxide</subject><subject>ZnO/CdSe</subject><issn>0169-4332</issn><issn>1873-5584</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kEtPwzAQhC0EEqXwDzjkyCWp7TycXJBQxUtC6oGKAxfLsTetqzQJXqcV_x6XcOaw2pV2ZqT5CLllNGGUFYtdogYcUSecsjxhLKGpOCMzVoo0zvMyOyezIKviLE35JblC3FHKePjOiPqwaOsW4tZutj5S2tuD8mCiz261WJp3iLbgwfXo3aj96CCuFYb3RmGE0GHvMDpav43a_hj1AzjlbbeJPOx_72C4JheNahFu_vacrJ8e18uX-G31_Lp8eIt1Risf87xoQLBKNarKM64M6JxqZcIoYJUQdZNBqXnVKG0akWZa17koeGlSXXCezsndFDu4_msE9HJvUUPbqg76ESUTZcFZiM6DNJukOvRCB40cnN0r9y0ZlSegcicnoPIEVDImA9Bgu59sEFocLDiJ2kKnwVgH2kvT2_8DfgD1V4Pv</recordid><startdate>20160101</startdate><enddate>20160101</enddate><creator>Wu, Bin</creator><creator>Lin, Zhangqing</creator><creator>Sheng, Minqi</creator><creator>Hou, Songyan</creator><creator>Xu, Jifang</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20160101</creationdate><title>Visible-light activated ZnO/CdSe heterostructure-based gas sensors with low operating temperature</title><author>Wu, Bin ; Lin, Zhangqing ; Sheng, Minqi ; Hou, Songyan ; Xu, Jifang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c409t-256fe719afa9542adec50cad0caae1977bf4e8c29facdf734ccb57628d3c6223</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Activated</topic><topic>Cadmium selenides</topic><topic>Gas sensor</topic><topic>Gas sensors</topic><topic>Heterostructures</topic><topic>Intermetallics</topic><topic>Light (illumination)</topic><topic>Low operating temperature</topic><topic>Operating temperature</topic><topic>Visible light illumination</topic><topic>Zinc oxide</topic><topic>ZnO/CdSe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Bin</creatorcontrib><creatorcontrib>Lin, Zhangqing</creatorcontrib><creatorcontrib>Sheng, Minqi</creatorcontrib><creatorcontrib>Hou, Songyan</creatorcontrib><creatorcontrib>Xu, Jifang</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied surface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Bin</au><au>Lin, Zhangqing</au><au>Sheng, Minqi</au><au>Hou, Songyan</au><au>Xu, Jifang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Visible-light activated ZnO/CdSe heterostructure-based gas sensors with low operating temperature</atitle><jtitle>Applied surface science</jtitle><date>2016-01-01</date><risdate>2016</risdate><volume>360</volume><spage>652</spage><epage>657</epage><pages>652-657</pages><issn>0169-4332</issn><eissn>1873-5584</eissn><abstract>⿢The ZnO/CdSe based sensors worked in low temperature.⿢The optimum operating temperature of 160°C is 100°C lower than that of ZnO.⿢The sensitivity was 20-fold higher in dark than that of ZnO.⿢The sensitivity was 3-fold higher under illumination than that of ZnO. Three-dimensional ZnO/CdSe heterostructure (ZnO/CdSe HS) was fabricated with large scale and its gas-sensing application with low operating temperature was explored. Combining cost-effective chemical vapor deposition with solution growth methods, ZnO nanorods were grown on the surface of CdSe nanoribbons. Scanning electron microscopy, X-ray diffraction and transmission electron microscopy were employed to confirm the formation of ZnO/CdSe HS. The ZnO/CdSe HSs were fabricated as gas sensors in the detection of ethanol at the optimum operating temperature of 160°C. Compared with ZnO-based gas sensors, the optimum operating temperature of the ZnO/CdSe HS-based sensor was approximately 100°C lower, while the sensitivity was 20-fold higher in the dark and 3-fold higher under visible light illumination condition. The enhancement of sensing properties was attributed to the advanced heterostructure and visible light activated CdSe.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.apsusc.2015.11.037</doi><tpages>6</tpages></addata></record>
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subjects	Activated Cadmium selenides Gas sensor Gas sensors Heterostructures Intermetallics Light (illumination) Low operating temperature Operating temperature Visible light illumination Zinc oxide ZnO/CdSe
title	Visible-light activated ZnO/CdSe heterostructure-based gas sensors with low operating temperature
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