物理学报2011，Vol.60Issue(3)：729-737,9.
Eu3+掺杂Gd2W2O9和Gd2(WO4)3纳米荧光粉发光性质研究
Luminescent properties of Eu3+ doped Gd2 W2O9 and Gd2 (WO4) 3 nanophosphors
摘要
Abstract
Eu3+ doped Gd2W2O9 and Gd2 ( WO4 )3 nanophosphors with different concentrations were prepared via a coprecipitation method. The structure and morphology of the nanocrystal samples were characterized by using X-ray diffraction (XRD) and field emission scanning electron microscopy ( FE - SEM ). The emission spectra and excitation spectra of the samples were measured, the J - O parameters and the quantum efficiencies of the 5D0 level of Eu3+ of the samples were calculated, and the concentration quenching curves of Eu3+ luminescence in different hosts were given. The study results indicate that similar to the Gd2 (WO4)3:Eu, the red emission of Eu3+ 5D0→ 7F2 transition in Gd2 W2O9 :Eu can also be effectively excited by 395 nm near- UV light and 465 nm blue light. So the Gd2W2O9 :Eu red phosphors may have a potential application for white light emitting diodes.关键词
白光LED/红色荧光粉/Eu3+/钨酸盐Key words
white LED/ red nanophosphors/ Eu3 + / tungstate引用本文复制引用
冯晓辉,孟庆裕,孙江亭,吕树臣,孙立男..Eu3+掺杂Gd2W2O9和Gd2(WO4)3纳米荧光粉发光性质研究[J].物理学报,2011,60(3):729-737,9.基金项目
国家自然科学基金(批准号:51002041),黑龙江省自然科学基金(批准号:A200812),黑龙江省科技厅2009年度高新技术攻关项目(批准号:09A405),黑龙江省教育厅科学技术研究计划(批准号:11551148),哈尔滨师范大学青年学术骨干资助计划(批准号:KGB200811)资助的课题. （批准号:51002041）
