期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 484, 期 1-2, 页码 505-509出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.04.152
关键词
Optical materials; Chemical synthesis; Crystal structure; Luminescence
Lead tungstate (PbWO4) microcrystals with different morphologies have been synthesized via a facile microwave irradiation method, and their luminescence properties have been studied. The products were characterized by the techniques of powder X-ray diffraction pattern, field-emission scanning electron microscopy, and transmission electron microscopy. The cetyltrimethylammonium bromine and pH value were found to play important roles in the morphological control of PbWO4 microcrystals. A possible mechanism is proposed for the selective formation of the different morphologies. The luminescence properties of PbWO4 are very sensitive for its structure and crystallinity, and can be readily tuned by controlling some fundamental experimental parameters. (C) 2009 Elsevier B.V. All rights reserved.
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