Show simple item record

dc.contributor.authorNizamoglu, S.en_US
dc.contributor.authorDemir, H. V.en_US
dc.date.accessioned2016-02-08T12:24:47Z
dc.date.available2016-02-08T12:24:47Z
dc.date.issued2009en_US
dc.identifier.issn10928081
dc.identifier.urihttp://hdl.handle.net/11693/28600
dc.description.abstractNanocrystals (NCs) provide narrow emission spectrum that can be conveniently tuned using quantum size effect. This ability to adjust and control emission spectrum of NCs makes them strong candidates for use in white color conversion light emitting diodes. For example, they are possibly be used for solid state lighting applications including indoor lighting, architectural lighting and scotopic street lighting, where spectrally tuned color conversion is necessary. In device research CdSe/ZnS core/shell nanocrystals are the most commonly used ones because of their good electronic isolation coming from ZnS shells and the resulting high quantum efficiency (QE) (i.e., >50% in solution) [1]. However, when these nanocrystals are integrated into the solid film, e.g., for white light generation, their in-film QE undesirably drops (despite their high QE in solution). Hence, this adversely affects the overall efficiency of the integrating devices that incorporate these NCs [2]. There have been various studies to understand the in-film optical properties of CdSe/ZnS core/shell NCs [3-5]. However, their spectrally resolved in-film quantum efficiency (i.e., the ratio of the number of photons emitted by the nanocrystal film to the number of photons absorbed in the nanocrystal film) and their photon conversion efficiency (i.e., the ratio of the number of photons emitted by the nanocrystal film to the number of photons incident to the nanocrystal film) have not been investigated in these previous studies. © 2009 IEEE.en_US
dc.language.isoEnglishen_US
dc.source.titleConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOSen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/LEOS.2009.5343274en_US
dc.subjectArchitectural lightingen_US
dc.subjectCdSe/ZnS core/shellen_US
dc.subjectColor conversionsen_US
dc.subjectEmission spectrumsen_US
dc.subjectHigh quantum efficiencyen_US
dc.subjectNanocrystal filmsen_US
dc.subjectOverall efficiencyen_US
dc.subjectPhoton conversion efficienciesen_US
dc.subjectQuantum size effectsen_US
dc.subjectSolid filmsen_US
dc.subjectSolid-state lighting applicationen_US
dc.subjectTuned coloren_US
dc.subjectWhite coloren_US
dc.subjectWhite LEDen_US
dc.subjectWhite-light generationen_US
dc.subjectColoren_US
dc.subjectConversion efficiencyen_US
dc.subjectEmission spectroscopyen_US
dc.subjectLighten_US
dc.subjectLight emitting diodesen_US
dc.subjectNanocrystalsen_US
dc.subjectPhotonsen_US
dc.subjectSemiconductor quantum dotsen_US
dc.subjectStreet lightingen_US
dc.subjectZinc sulfideen_US
dc.subjectQuantum efficiencyen_US
dc.titleWavelength dependent color conversion of CdSe/ZnS core/shell nanocrystals for white LEDsen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Physics
dc.departmentUNAM - Institute of Materials Science and Nanotechnology
dc.departmentDepartment of Electrical and Electronics Engineering
dc.citation.spage280en_US
dc.citation.epage281en_US
dc.identifier.doi10.1109/LEOS.2009.5343274en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record