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溶胶-凝胶法制备绿色发光粉Zn_2SiO_4:Mn~(2+)及其发光性能
引用本文:蔡进军,王忆,潘欢欢,曾庆光,胡社军.溶胶-凝胶法制备绿色发光粉Zn_2SiO_4:Mn~(2+)及其发光性能[J].发光学报,2010,31(1):75-78.
作者姓名:蔡进军  王忆  潘欢欢  曾庆光  胡社军
作者单位:1. 五邑大学 化学与环境工程系, 广东 江门 529020;2. 五邑大学 纳米与薄膜材料研究所, 广东 江门 529020
基金项目:国家自然科学基金(10874160);;广东省科技计划基金(粤科计字[2007]173号);;江门市科技计划基金(江财工[2007]28号)资助项目
摘    要:利用溶胶-凝胶法在加入H3BO3助熔剂的环境下制备了掺杂不同量Mn2+的Zn2SiO4绿色发光粉。用X射线衍射仪和荧光光谱仪对其结构和光致发光性能进行了测试分析。结果表明:900℃还原气氛下退火后,样品呈现明显的绿色,Mn2+最佳掺杂摩尔分数为2%,当掺杂量超过2%后光谱发生强烈的浓度猝灭效应。最后,对这种物质的发光机理进行了分析。

关 键 词:溶胶-凝胶  绿色发光粉  光致发光  掺杂
收稿时间:2009-05-11

Preparation and Photoluminescence of Green Zn2SiO4 : Mn2+ Phosphor by Sol-gel Method
CAI Jin-jun,WANG Yi,PAN Huan-huan,ZENG Qing-guang,HU She-jun.Preparation and Photoluminescence of Green Zn2SiO4 : Mn2+ Phosphor by Sol-gel Method[J].Chinese Journal of Luminescence,2010,31(1):75-78.
Authors:CAI Jin-jun  WANG Yi  PAN Huan-huan  ZENG Qing-guang  HU She-jun
Institution:1. Department of Chemistry and Environmental Engineering, Wuyi University, Jiangmen 529020, China;2. Institute of Thin Films and Nano Materials, Wuyi University, Jiangmen 529020, China
Abstract:Different content of Mn~(2+) doped Zn_2SiO_4 green phosphors were prepared by sol-gel method under the dopants of boron ions.The photoluminescent properties and structure of the samples were studied by fluorescence spectroscopy and X-ray diffraction, respectively. Results showed that, after annealed at 900 ℃ in reducing atmosphere, the sample exhibits a clear green color and the best doping mol fraction is 2%. A strong concentration quenching effect is presented when the concentration of x_(Mn~(2+)) >2%, the possible luminescence mechanism of the samples was also analyzed in this paper.
Keywords:sol-gel  green phosphors  photoluminescence  doping  
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