Photoconductivity studies on amorphous and crystalline TiO2 films doped with gold nanoparticles
In this work, amorphous and crystalline TiO 2 films were synthesized by the sol–gel process at room temperature. The TiO 2 films were doped with gold nanoparticles. The films were spin-coated on glass wafers. The crystalline samples were annealed at 100°C for 30 minutes and sintered at 520°C for 2 h...
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| Veröffentlicht in: | Applied physics. A, Materials science & processing Materials science & processing, 2011-06, Vol.103 (3), p.659-663 |
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| container_title | Applied physics. A, Materials science & processing |
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| creator | Valverde-Aguilar, G. García-Macedo, J. A. Rentería-Tapia, V. Aguilar-Franco, M. |
| description | In this work, amorphous and crystalline TiO
2
films were synthesized by the sol–gel process at room temperature. The TiO
2
films were doped with gold nanoparticles. The films were spin-coated on glass wafers. The crystalline samples were annealed at 100°C for 30 minutes and sintered at 520°C for 2 h. All films were characterized using X-ray diffraction, transmission electronic microscopy and UV-Vis absorption spectroscopy. Two crystalline phases, anatase and rutile, were formed in the matrix TiO
2
and TiO
2
/Au. An absorption peak was located at 570 nm (amorphous) and 645 nm (anatase). Photoconductivity studies were performed on these films. The experimental data were fitted with straight lines at darkness and under illumination at 515 nm and 645 nm. This indicates an ohmic behavior. Crystalline TiO
2
/Au films are more photoconductive than the amorphous ones. |
| doi_str_mv | 10.1007/s00339-010-6199-6 |
| format | Article |
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2
films were synthesized by the sol–gel process at room temperature. The TiO
2
films were doped with gold nanoparticles. The films were spin-coated on glass wafers. The crystalline samples were annealed at 100°C for 30 minutes and sintered at 520°C for 2 h. All films were characterized using X-ray diffraction, transmission electronic microscopy and UV-Vis absorption spectroscopy. Two crystalline phases, anatase and rutile, were formed in the matrix TiO
2
and TiO
2
/Au. An absorption peak was located at 570 nm (amorphous) and 645 nm (anatase). Photoconductivity studies were performed on these films. The experimental data were fitted with straight lines at darkness and under illumination at 515 nm and 645 nm. This indicates an ohmic behavior. Crystalline TiO
2
/Au films are more photoconductive than the amorphous ones.</description><identifier>ISSN: 0947-8396</identifier><identifier>EISSN: 1432-0630</identifier><identifier>DOI: 10.1007/s00339-010-6199-6</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer-Verlag</publisher><subject>Anatase ; Characterization and Evaluation of Materials ; Condensed Matter Physics ; Crystal structure ; Electronics ; Gold ; Machines ; Manufacturing ; Nanoparticles ; Nanotechnology ; Optical and Electronic Materials ; Photoconductivity ; Physics ; Physics and Astronomy ; Processes ; Rutile ; Surfaces and Interfaces ; Thin Films ; Titanium dioxide</subject><ispartof>Applied physics. A, Materials science & processing, 2011-06, Vol.103 (3), p.659-663</ispartof><rights>Springer-Verlag 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c361t-37f2ea869d3bb8e8e4ede9be4f972f5531bd1e148122eca07d087a6bb17ae0283</citedby><cites>FETCH-LOGICAL-c361t-37f2ea869d3bb8e8e4ede9be4f972f5531bd1e148122eca07d087a6bb17ae0283</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00339-010-6199-6$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00339-010-6199-6$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,777,781,27905,27906,41469,42538,51300</link.rule.ids></links><search><creatorcontrib>Valverde-Aguilar, G.</creatorcontrib><creatorcontrib>García-Macedo, J. A.</creatorcontrib><creatorcontrib>Rentería-Tapia, V.</creatorcontrib><creatorcontrib>Aguilar-Franco, M.</creatorcontrib><title>Photoconductivity studies on amorphous and crystalline TiO2 films doped with gold nanoparticles</title><title>Applied physics. A, Materials science & processing</title><addtitle>Appl. Phys. A</addtitle><description>In this work, amorphous and crystalline TiO
2
films were synthesized by the sol–gel process at room temperature. The TiO
2
films were doped with gold nanoparticles. The films were spin-coated on glass wafers. The crystalline samples were annealed at 100°C for 30 minutes and sintered at 520°C for 2 h. All films were characterized using X-ray diffraction, transmission electronic microscopy and UV-Vis absorption spectroscopy. Two crystalline phases, anatase and rutile, were formed in the matrix TiO
2
and TiO
2
/Au. An absorption peak was located at 570 nm (amorphous) and 645 nm (anatase). Photoconductivity studies were performed on these films. The experimental data were fitted with straight lines at darkness and under illumination at 515 nm and 645 nm. This indicates an ohmic behavior. Crystalline TiO
2
/Au films are more photoconductive than the amorphous ones.</description><subject>Anatase</subject><subject>Characterization and Evaluation of Materials</subject><subject>Condensed Matter Physics</subject><subject>Crystal structure</subject><subject>Electronics</subject><subject>Gold</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Nanoparticles</subject><subject>Nanotechnology</subject><subject>Optical and Electronic Materials</subject><subject>Photoconductivity</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Processes</subject><subject>Rutile</subject><subject>Surfaces and Interfaces</subject><subject>Thin Films</subject><subject>Titanium dioxide</subject><issn>0947-8396</issn><issn>1432-0630</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhi0EEqXwA9i8MQX8kTrxiCq-pEplKLPlxJfWlWMH2wH13xMUZm655X1e3T0I3VJyTwmpHhIhnMuCUFIIKmUhztCClpwVRHByjhZEllVRcyku0VVKRzJNydgCqfdDyKEN3oxttl82n3DKo7GQcPBY9yEOhzAmrL3BbTylrJ2zHvDObhnurOsTNmEAg79tPuB9cAZ77cOgY7atg3SNLjrtEtz87SX6eH7arV-Lzfblbf24KVouaC541THQtZCGN00NNZRgQDZQdrJi3WrFaWMo0LKmjEGrSWVIXWnRNLTSQFjNl-hu7h1i-BwhZdXb1IJz2sN0v5KTlFLyqWmJ6JxsY0gpQqeGaHsdT4oS9etSzS7V5FL9ulRiYtjMpCnr9xDVMYzRTw_9A_0ApYp5Qg</recordid><startdate>20110601</startdate><enddate>20110601</enddate><creator>Valverde-Aguilar, G.</creator><creator>García-Macedo, J. A.</creator><creator>Rentería-Tapia, V.</creator><creator>Aguilar-Franco, M.</creator><general>Springer-Verlag</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20110601</creationdate><title>Photoconductivity studies on amorphous and crystalline TiO2 films doped with gold nanoparticles</title><author>Valverde-Aguilar, G. ; García-Macedo, J. A. ; Rentería-Tapia, V. ; Aguilar-Franco, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-37f2ea869d3bb8e8e4ede9be4f972f5531bd1e148122eca07d087a6bb17ae0283</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Anatase</topic><topic>Characterization and Evaluation of Materials</topic><topic>Condensed Matter Physics</topic><topic>Crystal structure</topic><topic>Electronics</topic><topic>Gold</topic><topic>Machines</topic><topic>Manufacturing</topic><topic>Nanoparticles</topic><topic>Nanotechnology</topic><topic>Optical and Electronic Materials</topic><topic>Photoconductivity</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Processes</topic><topic>Rutile</topic><topic>Surfaces and Interfaces</topic><topic>Thin Films</topic><topic>Titanium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Valverde-Aguilar, G.</creatorcontrib><creatorcontrib>García-Macedo, J. A.</creatorcontrib><creatorcontrib>Rentería-Tapia, V.</creatorcontrib><creatorcontrib>Aguilar-Franco, M.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied physics. A, Materials science & processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Valverde-Aguilar, G.</au><au>García-Macedo, J. A.</au><au>Rentería-Tapia, V.</au><au>Aguilar-Franco, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photoconductivity studies on amorphous and crystalline TiO2 films doped with gold nanoparticles</atitle><jtitle>Applied physics. A, Materials science & processing</jtitle><stitle>Appl. Phys. A</stitle><date>2011-06-01</date><risdate>2011</risdate><volume>103</volume><issue>3</issue><spage>659</spage><epage>663</epage><pages>659-663</pages><issn>0947-8396</issn><eissn>1432-0630</eissn><abstract>In this work, amorphous and crystalline TiO
2
films were synthesized by the sol–gel process at room temperature. The TiO
2
films were doped with gold nanoparticles. The films were spin-coated on glass wafers. The crystalline samples were annealed at 100°C for 30 minutes and sintered at 520°C for 2 h. All films were characterized using X-ray diffraction, transmission electronic microscopy and UV-Vis absorption spectroscopy. Two crystalline phases, anatase and rutile, were formed in the matrix TiO
2
and TiO
2
/Au. An absorption peak was located at 570 nm (amorphous) and 645 nm (anatase). Photoconductivity studies were performed on these films. The experimental data were fitted with straight lines at darkness and under illumination at 515 nm and 645 nm. This indicates an ohmic behavior. Crystalline TiO
2
/Au films are more photoconductive than the amorphous ones.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/s00339-010-6199-6</doi><tpages>5</tpages></addata></record> |
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| identifier | ISSN: 0947-8396 |
| ispartof | Applied physics. A, Materials science & processing, 2011-06, Vol.103 (3), p.659-663 |
| issn | 0947-8396 1432-0630 |
| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Anatase Characterization and Evaluation of Materials Condensed Matter Physics Crystal structure Electronics Gold Machines Manufacturing Nanoparticles Nanotechnology Optical and Electronic Materials Photoconductivity Physics Physics and Astronomy Processes Rutile Surfaces and Interfaces Thin Films Titanium dioxide |
| title | Photoconductivity studies on amorphous and crystalline TiO2 films doped with gold nanoparticles |
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