Preparation of Cr-doped Y3Al5O12 phosphors by heterogeneous precipitation methods and their luminescent properties

Authors
Matsubara, I Paranthaman, M Allison, SW Cates, MR Beshears, DL Holcomb, DE
Citation
I. Matsubara et al., Preparation of Cr-doped Y3Al5O12 phosphors by heterogeneous precipitation methods and their luminescent properties, MATER RES B, 35(2), 2000, pp. 217-224
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS RESEARCH BULLETIN
ISSN journal
00255408 → ACNP
Volume
35
Issue
2
Year of publication
2000
Pages
217 - 224
Database
ISI
SICI code
0025-5408(20000115)35:2<217:POCYPB>2.0.ZU;2-#
Abstract
Chromium-doped Y3Al5O12 (YAG-Cr) phosphor powders were prepared by a hetero geneous precipitation method. Hydroxide precursor powders were precipitated from their respective metal sulfate solutions with urea. The formation of the YAG phosphors was investigated by means of XRD. Phase pure YAG-Cr was f ormed by heating the precursors at 1300 degrees C, which is more than 300 d egrees C lower than that required for the conventional solid-state reaction method. The emission intensity of YAG-Cr phosphors increased with increasi ng firing temperature, and the intensities observed for phosphor powders we re brighter than that of the commercial YAG-Cr phosphors. (C) 2000 Elsevier Science Ltd. All rights reserved.