硅酸盐学报

菱形钨酸铅微晶的制备及发光性能

作者：杨玉国曹树梁许建华石延岭蔡滨王卓

单位：山东省科学院新材料研究所山东省科学院新材料研究所山东省科学院新材料研究所山东省科学院新材料研究所山东省科学院新材料研究所烟台大学环境和材料工程学院济南 250014 济南 250014 济南 250014 济南 250014 济南 250014 山东烟台 264005

关键词：钨酸铅沉淀法微晶光致发光

分类号：TQ134.3

出版年,卷(期):页码：2007,35(11):1495-1497

DOI：

摘要：

以钨酸钠和醋酸铅为原料,加以表面活性剂十六烷基三甲苯溴化铵,用沉淀法制备钨酸铅产物;将钨酸铅产物在100℃烘干后制备了菱形钨酸铅微晶粉体。对制备的样品进行X射线衍射分析和透射电镜观察。结果表明:所制备的钨酸铅微晶结晶良好;菱形钨酸铅微晶形貌整齐,颗粒间无团聚发生,微晶边长在1～1.5μm之间。在菱形钨酸铅微晶的形成过程中,Ostwald成熟进程起着丰导作用。所制备的钨酸铝的光致发光光谱中显示有蓝色、绿色和红色3组主要发光峰。

Lead tungstate microcrystals were prepared by precipitation after heat treatment at 100℃,with lead acetate and natrium tungstate as starting materials,and adding the surfactant of cetyltrimethyl ammonium bromide.The X-ray diffraction analysis indi- cates that the crystallite lead tungstate microcrystals were excellent,and observation results by transmission electron microscopy in- dicate that the rhombic lead tungstate microcrystals with a size of 1-1.5μm has outstanding morphology,and the particles are well dispersed and not aggregated.The"Ostwald ripening process"plays an important role in the formation of rhombic lead tungstate mi- crocrystal.When excited at 245 nm,the luminescence of rhombic PbWO_4 microcrystals exhibit three types of luminous peaks in the blue,green and red bands.

基金项目：

作者简介：

参考文献：

[1]任国浩，沈定中，倪海洪，等．PbWO_4晶体中的生长层研究[J]．人工晶体学报，2000，29(4)：329-334．REN Guohao,SHEN Dingzhong,NI Halhong,et al.J Synth Cryst (in Chinese),2000,29(4):329-334. [2]张明荣，李培俊，殷之文．闪烁晶体PbWO_4晶体的研究现状[J]．材料研究学报，1998，12(2)：113-122．ZHANG Mingrong,LI Peijun,YIN Zhiwen.Chin J Mater Res (in Chinese),1998,12(2):113-122. [3]ANNENKOV A A,KORZHIK M V,LECOQ P.Lead tungstate scintil- lation material [J].Nucl Instrum Methods Phys Res A,2002,490: 30-50. [4]王卓，杨玉国，杨长红．沉淀法制备钨酸铅纳米晶体[J]．硅酸盐学报，2006，34(5)：601-603．WANG Zhuo,YANG Yuguo,YANG Changhong.J Chin Ceram Soc (in Chinese),2006,34(5):601-603. [5]TADAO Sugimoto.Preparation of monodispersed colloidal particles [J].Adv Colloid Interface Sci,1987,28:65-108. [6]CHEN Yonghu,SHI Chaoshu,HU Guanqin.Influence of Sb doping on the luminescent properties of PbWO_4 single crystals [J].J Appl Phys, 2000,87(3):1 503-1 506. [7]LECOQ P,AFINEI I,AUFFARY E,et al.Lead tungstate (PbWO_4) scintillators for LHC EM calorimetry [J].Nucl Instrum Methods Phys Res A,1995,365:291-298. [8]QI Zeming,SHI Chaoshu,ZHOU Donsfang,et al.The green emission and local structure of the scintillator PbWO_4[J].Phys B,2001,307: 45-50. [9]杨玉国，王卓，杨长红．钨酸铅纳米晶的制备及其发光性能研究[J]．人工晶体学报，2006，35(3)：627-629．YANG Yuguo,WANG Zhuo,YANG Changhong.J Synth Cryst (in Chinese),2006,35(3):627-629.

服务与反馈：

【文章下载】【加入收藏】