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Title: Eu<sup>3+</sup> luminescence in Na<sub>3</sub>SO<sub>4</sub>F and NaMgSO<sub>4</sub>F halosulphate phosphor for mercury-free lamps
Authors: Nagpure, I M
Dhoble, S J
Godbole, S V
Bhide, M K
Pode, R B
Issue Date: Jun-2009
Publisher: CSIR
Abstract: Polycrystalline Na<sub>3</sub>SO<sub>4</sub>F:Eu and NaMgSO<sub>4</sub>F:Eu phosphors prepared by a wet chemical method has been studied for its photoluminescence (PL) characteristics. PL emission spectra of Na<sub>3</sub>SO<sub>4</sub>F and NaMgSO<sub>4</sub>F, phosphors under 393 nm excitation (mercury-free excitation) shows very strong prominet peak at 591 nm due to<sup> 5</sup>D<sub>o </sub>→<sup>7</sup>F<sub>1</sub> transition and 613 nm corresponding to <sup>5</sup>D<sub>o </sub>→<sup>7</sup>F<sub>2</sub> transition in the red region of the spectrum<b style="">. </b>The PL emission spectra of Eu<sup>3+ </sup>ion<sup> </sup>in the Na<sub>3</sub>SO<sub>4</sub>F:Eu and NaMgSO<sub>4</sub>F:Eu phosphors are applicable for mercury free lamp industries.
Description: 181-184
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.16(3) [June 2009]

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