降低ZnS:Mn荧光粉电阻率的SnO_2:Sb薄膜包覆研究  

STUDY ON LOWERING RESISTIVITY OF ZnS:Mn PHOSPHORS BY COATION SnO_2:Sb FILMS

作　　者：李怀祥[1] 左相青[1] 王安河[1] 周宏伟[1] 

机构地区：[1]山东师范大学化学化工与材料科学学院,济南250014

出　　处：《山东师范大学学报（自然科学版）》2006年第3期67-69,共3页Journal of Shandong Normal University(Natural Science)

基　　金：国家自然科学基金(60071006);山东省自然科学基金(2002G11)资助项目

摘　　要：以ZnS(荧光纯)与MnCl2(分析纯)为原料通过固相反应法,高温烧结制成ZnS:Mn荧光粉.采用化学共沉淀法在ZnS:Mn荧光粉表面包覆上一层透明的SnO2:Sb薄膜来增加材料的导电性.用数字万用表和自制的测量盒测量了粉体的电阻.试验并讨论了包覆层中不同的Sb/Sn摩尔比,包覆量(Sn/Zn),热处理时间以及热处理温度对粉体电阻率的影响.ZnS： Mn phosphor particles were prepared by solid reaction with ZnS and MnCl2 ： 4H2O. Surface modification of the ZnS： Mn powders was carried out by coating transparent conductive films of Sb - doped SnO2, formed by homogeneous phase co - precipitation and heat treatment process. The effects of Sb/Sn molar percent, coating amount, heat treating temperature and time on conductivity of the coated ZnS： Mn phosphors have been investigated. The coated phosphors were characterized by x- ray diffraction （XRD）measurements.

关 键 词：ZnS:Mn荧光粉 固相反应 化学共沉淀 表面包覆 

分 类 号：TQ174.756[化学工程—陶瓷工业] TK511.4[化学工程—硅酸盐工业]