Enhanced luminescence properties of YAG: Ce3+ nanophosphor prepared by flame spray pyrolysis

Jae Seok Lee, Purushottam Kumar, Sushant Gupta, Myoung Hwan Oh, Madhav B. Ranade, Rajiv K. Singh

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Cerium-doped Y3 Al5 O12 (YAG): Ce 3+nanophosphor particles were synthesized using flame spray pyrolysis (FSP) from urea-added nitrate liquid precursor with different molar ratios of yttrium to aluminum. The effect of urea and Y:Al molar ratio in the liquid precursor on the crystallinity and luminescence properties of YAG: Ce 3+ nanophosphors was studied. The cubic YAG structure was obtained after heat-treatment of as-prepared particles. The addition of urea leads to a higher flame temperature and helps in the formation of crystalline phase during FSP. A higher molar concentration of Al in the liquid precursor helped in better incorporation of the dopant atom in the lattice and also promoted the formation of YAG phase. Well-dispersed spherical particles with an estimated size of 50 nm were obtained by the process. The YAG: Ce3+ nanophosphors synthesized using urea and excess aluminum in liquid precursor showed better crystallinity and higher luminescence intensity.

Original languageEnglish
Pages (from-to)K25-K29
JournalJournal of the Electrochemical Society
Volume157
Issue number2
DOIs
StatePublished - 2010
Externally publishedYes

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