ZnS:Mn荧光粉的溶剂热法制备及其发光性能  

Preparation and Photoluminescent Properties of Mn-doped ZnS Phosphor Powder Synthesized by Solvothermal Method

作　　者：李大光[1,2] 陈平清[2] 李铁虎[1] 赵丰华[2] 傅维勤[2] 黄林源[2] 蔡伟贤[2] 

机构地区：[1]西北工业大学材料学院,陕西西安710072 [2]广东工业大学轻工化工学院,广东广州510006

出　　处：《材料科学与工程学报》2009年第6期920-923,共4页Journal of Materials Science and Engineering

基　　金：广东省自然科学基金团队资助项目(04205301);广东省工业攻关资助项目(2004A10701005)

摘　　要：采用溶剂热法合成了ZnS∶Mn荧光粉,讨论了锰掺杂量对硫化锌发光性能的影响。通过扫描电镜(SEM)、X射线粉末衍射仪(XRD)、紫外可见分光光度计(UV-Vis)和荧光分光光度计(PL)对合成的ZnS∶Mn荧光粉的结构和光学性能进行了表征。结果表明:ZnS∶Mn荧光粉的平均粒径为13.5nm,在波长340nm^200nm处有强吸收,Mn离子浓度在所研究范围内,锰掺杂量对硫化锌的晶型、结晶度、粒径无影响,但对其能级结构影响显著,且随着Mn离子掺杂量的增加,发光强度先增加后减小,掺杂量为5%时达到最大值。Mn-doped ZnS phosphor powder was synthesized by solvothermal method.The effect of Mn content on the photoluminescent property of ZnS was discussed.Structure and photoluminescent properties were characterized by XRD,SEM, UV-Vis and PL.Results show that the average size of Mn-doped ZnS phosphor powder is about 13.5nm;phosphor powder has strong absorption in the range from 340nm to 200nm,and the molar ration of Mn has no effect on the crystal type,crystallinity,and size of ZnS particles.In spite of that,the energy level structure of ZnS powder is influenced. With increasing molar ration of Mn, the intensity of photoluminescence is enhanced, and declined soon. It＇s found that the best concentration is about five percentage of Mn in the Mn-doped ZnS.

关 键 词：荧光粉 ZnS∶Mn 溶剂热 发光性能 

分 类 号：TN304.25[电子电信—物理电子学]