Y2O2S:Eu3+ nanocrystals, a strong quantum-confined luminescent system
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Y2O2S:Eu3+ nanocrystals, a strong quantum-confined
luminescent system
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| Creator |
Thirumalai, J.
Jagannathan, R. Trivedi, D.C. |
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| Subject |
Electrochemical Materials Science
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| Description |
Trivalent europium-doped yttrium oxysulfide nanocrystals synthesized using sol–gel thermolysis show significant blue shifts in the
excitation bands corresponding to fundamental absorption, charge-transfer absorption. A significant blue shift observed in the
fundamental absorption edge for the nanocrystals having an average crystallite size (f) in the range 9–15nm indicates a strong quantum
confinement with a Bohr exciton radius of 5–13 nm. Also, the diffuse reflectance spectra and the corresponding Kubelka–Munk plot
indicate the possibility of profound decrease in the absorption coefficient of Eu3+–ligand charge-transfer species necessitating further
studies in this wide-gap semiconductor nanocrystalline system.
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| Publisher |
Elsevier B.V.
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| Date |
2007
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/769/1/090-2007.pdf
Thirumalai, J. and Jagannathan, R. and Trivedi, D.C. (2007) Y2O2S:Eu3+ nanocrystals, a strong quantum-confined luminescent system. Journal of Luminescence, 126. pp. 353-358. |
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| Relation |
http://cecri.csircentral.net/769/
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