Nanostructured titania films sensitized by quantum dot chalcogenides

Kontos, AG; Likodimos, V; Vassalou, E; Kapogianni, I; Raptis, YS; Raptis, C; Falaras, P

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	https://dspace.lib.ntua.gr/xmlui/handle/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