Rapid synthesis of spherical-shaped green-emitting MgGa{sub 2}O{sub 4}:Mn{sup 2+} phosphor via spray pyrolysis
- Advanced Materials Division, Korea Research Institute of Chemical Technology, P.O. Box 107, Yuseong, Daejeon 305-600 (Korea, Republic of)
- Dongbu Fine Chemicals Co., Ltd. 623 Seonggok-dong, Danwon-gu, Ansan-si, Gyeonggi-do, 423-833 (Korea, Republic of)
- LED Research Center, LED PKG Development Group, LG Innotek Co., Ltd. 533 Hogye 1-dong, Dongan-gu, Anyang-si, Gyeonggi-do, 431-831 (Korea, Republic of)
Simple, one-step synthesis of spherical-shaped powder phosphors with aqueous precursors via a spray pyrolysis method is reported. Green-emitting MgGa{sub 2}O{sub 4}:Mn{sup 2+} phosphor with a controlled shape was successfully obtained by spraying under a reductive atmosphere (N{sub 2} + H{sub 2} carrier gas) without high-temperature post-heat treatment. In addition, the corresponding powder phosphors were well dispersed and showed a clean surface morphology compared to an existing cumbersome process using high-temperature post-annealing. The new method may help to prevent surface residual non-radiative defect sites. The result of highly luminescent and spherical morphology, non-aggregated powder phosphor by this procedure holds promise for a cost-effective and rapid synthesis process for conventional inorganic phosphors.
- OSTI ID:
- 22207349
- Journal Information:
- Materials Research Bulletin, Vol. 45, Issue 8; Other Information: Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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