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Nanostructured titania films sensitized by quantum dot chalcogenides

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dc.contributor.author Kontos, AG en
dc.contributor.author Likodimos, V en
dc.contributor.author Vassalou, E en
dc.contributor.author Kapogianni, I en
dc.contributor.author Raptis, YS en
dc.contributor.author Raptis, C en
dc.contributor.author Falaras, P en
dc.date.accessioned 2014-03-01T02:00:30Z
dc.date.available 2014-03-01T02:00:30Z
dc.date.issued 2010 en
dc.identifier.issn 1931-7573 en
dc.identifier.uri http://hdl.handle.net/123456789/29110
dc.subject.classification Nanoscience & Nanotechnology en
dc.subject.classification Materials Science, Multidisciplinary en
dc.subject.classification Physics, Applied en
dc.subject.other SOLAR-CELLS en
dc.subject.other RAMAN-SCATTERING en
dc.subject.other DYE en
dc.subject.other STABILITY en
dc.subject.other LIGHT en
dc.subject.other NANOCRYSTALS en
dc.subject.other CDSE en
dc.subject.other PBS en
dc.title Nanostructured titania films sensitized by quantum dot chalcogenides en
heal.type journalArticle en
heal.identifier.secondary 266 en
heal.language English en
heal.publicationDate 2010 en
heal.abstract The optical and structural properties of cadmium and lead sulfide nanocrystals deposited on mesoporous TiO2 substrates via the successive ionic layer adsorption and reaction method were comparatively investigated by reflectance, transmittance, micro-Raman and photoluminescence measurements. Enhanced interfacial electron transfer is evidenced upon direct growth of both CdS and PbS on TiO2 through the marked quenching of their excitonic emission. The optical absorbance of CdS/TiO2 can be tuned over a narrow spectral range. On the other side PbS/TiO2 exhibits a remarkable band gap tunability extending from the visible to the near infrared range, due to the distinct quantum size effects of PbS quantum dots. However, PbS/TiO2 suffers from severe degradation upon air exposure. Degradation effects are much less pronounced for CdS/TiO2 that is appreciably more stable, though it degrades readily upon visible light illumination. en
heal.publisher SPRINGER en
heal.journalName NANOSCALE RESEARCH LETTERS en
dc.identifier.isi ISI:000290525700131 en
dc.identifier.volume 6 en
dc.identifier.issue 1 en


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