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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 14 — Jul. 15, 2010
  • pp: 2331–2333

Size dependence of Eu–O charge transfer process on luminescence characteristics of YBO 3 : Eu 3 + nanocrystals

Prashant K. Sharma, Ranu K. Dutta, and Avinash C. Pandey  »View Author Affiliations


Optics Letters, Vol. 35, Issue 14, pp. 2331-2333 (2010)
http://dx.doi.org/10.1364/OL.35.002331


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Abstract

Well-crystallized pure hexagonal phase YBO 3 : Eu 3 + nanoparticles are prepared by the reverse micelles method. Vac uum ultraviolet photoluminescence (VUVPL) spectroscopy showed size-dependent nonlinear luminescence enhancement with remarkably improved chromaticity (0.62, 0.34), as compared to the commercial bulk YBO 3 : Eu 3 + phosphor (0.56, 0.39). The quenching concentration of Eu 3 + doping and the ratio of red ( D 0 5 F 2 7 ) to orange ( D 0 5 F 1 7 ) emission was found significantly enhanced with the decrease in particle size, making it an ideal VUV phosphor for plasma display panels. The possible explanation for size dependence of the Eu–O charge transfer process via lowering of the structural symmetry is proposed in detail.

© 2010 Optical Society of America

OCIS Codes
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials
(300.0300) Spectroscopy : Spectroscopy
(160.4236) Materials : Nanomaterials

ToC Category:
Materials

History
Original Manuscript: March 29, 2010
Revised Manuscript: June 10, 2010
Manuscript Accepted: June 11, 2010
Published: July 1, 2010

Citation
Prashant K. Sharma, Ranu K. Dutta, and Avinash C. Pandey, "Size dependence of Eu–O charge transfer process on luminescence characteristics of YBO3:Eu3+ nanocrystals," Opt. Lett. 35, 2331-2333 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-14-2331


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