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S ynthesis and luminescence property of Sr 1 x Eu x 3 Al 2 O 6 red phosphor prepared by co precipitation technique for white light emitting diodes

WENTAO ZHANG1,* , PEICONG ZHANG1, JUNFENG LI1, KEHUI QIU1

Affiliation

  1. C ollege of Materials and Chemistry & Chemical Engineering, Che ngdu University of Technology, Chengdu 610059, China

Abstract

(Sr1 x Eu x 3Al2O6 red phosphor was synthesized by co-precipitation with ammonium bicarbonate as precipitant. X-ray diffraction result indicated the prepared samples have standard crystal structure of Sr3 Al2O6 , and co-precipitation has lower crystallization temperature than solid state reaction. Scanning electron microscope image revealed the real morphology and particle size of obtained phosphors with weak agglomeration. Red emission of Eu2+ centers was shown at peak of 620nm under excitation with wavelength of 440~ 480 nmnm, which fitted well with GaN blue chip of white LEDs. As result, the luminescence property of obtained (Sr1 x Eu x 3Al2O6 phosphor was improved obviously prepared by co-precipitation comparing with solid-state reaction..

Keywords

Strontium aluminate, Red emitting, Photoluminescence, Co-precipitation, Phosphor.

Citation

WENTAO ZHANG, PEICONG ZHANG, JUNFENG LI, KEHUI QIU, S ynthesis and luminescence property of Sr 1 x Eu x 3 Al 2 O 6 red phosphor prepared by co precipitation technique for white light emitting diodes, Optoelectronics and Advanced Materials - Rapid Communications, 8, 1-2, January-February 2014, pp.37-41 (2014).

Submitted at: Aug. 21, 2013

Accepted at: Jan. 22, 2014