期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 70, 期 8, 页码 1146-1149出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2009.06.015
关键词
Optical materials; Chemical synthesis; Luminescence
资金
- National Natural Science Foundation of China (NSFC) [10874061]
- Ministry of Education and Guangdong Province [0712226100023]
Nanoscaled Zn2SiO4:Mn2+ green phosphor with regular and uniform morphology was synthesized by hydrothermal method at a low temperature of 140 degrees C. The structure and morphology of the phosphor was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The effects of the hydrothermal temperature and the time on the crystallite structure and the vacuum ultraviolet (VUV) photoluminescence (PL) properties were evaluated. The as-synthesized nanoscaled Zn2SiO4:Mn2+ phosphor exhibited intensive broad emission around 523 nm, which was attributed to the T-4(1)->(6)A(1) transition of Mn2+. The PL intensity increased along with the increasing hydrothermal temperature and time. The heat-treated phosphors exhibited higher PL intensity than the corresponding samples prepared using the conventional solid-state reaction. (C) 2009 Elsevier Ltd. All rights reserved.
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