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dc.contributor.authorGupta, Shuchien_US
dc.contributor.authorZhovtiuk, Olgaen_US
dc.contributor.authorVaneski, Aleksandaren_US
dc.contributor.authorLin, Yan-Chengen_US
dc.contributor.authorChou, Wu-Chingen_US
dc.contributor.authorKershaw, Stephen V.en_US
dc.contributor.authorRogach, Andrey L.en_US
dc.date.accessioned2014-12-08T15:30:17Z-
dc.date.available2014-12-08T15:30:17Z-
dc.date.issued2013-04-01en_US
dc.identifier.issn0934-0866en_US
dc.identifier.urihttp://dx.doi.org/10.1002/ppsc.201200139en_US
dc.identifier.urihttp://hdl.handle.net/11536/21687-
dc.description.abstractThe energy gap between valence and conduction levels in colloidal semiconductor quantum dots can be tuned via the nanoparticle diameter when this is comparable to or less than the Bohr radius. In materials such as cadmium mercury telluride, which readily forms a single phase ternary alloy, this quantum confinement tuning can also be augmented by compositional tuning, which brings a further degree of freedom in the bandgap engineering. Here it is shown that compositional control of 2.3 nm diameter CdxHg(1x)Te nanocrystals by exchange of Hg2+ in place of Cd2+ ions can be used to tune their optical properties across a technologically useful range, from 500 nm to almost 1200 nm. Data on composition-dependent changes in the optical properties are provided, including bandgap, extinction coefficient, emission energy and spectral shape, Stokes shift, quantum efficiency, and radiative lifetimes as the exchange process occurs, which are highly relevant for those seeking to use these technologically important QD materials.en_US
dc.language.isoen_USen_US
dc.subjectnanoparticlesen_US
dc.subjectalloysen_US
dc.subjectcation exchangeen_US
dc.subjectbandgap tuningen_US
dc.subjectnanocrystalsen_US
dc.titleCdxHg(1x)Te Alloy Colloidal Quantum Dots: Tuning Optical Properties from the Visible to Near-Infrared by Ion Exchangeen_US
dc.typeArticleen_US
dc.identifier.doi10.1002/ppsc.201200139en_US
dc.identifier.journalPARTICLE & PARTICLE SYSTEMS CHARACTERIZATIONen_US
dc.citation.volume30en_US
dc.citation.issue4en_US
dc.citation.spage346en_US
dc.citation.epage354en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000318106000008-
dc.citation.woscount10-
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