微小尺寸可控的Y2O3：Eu3＋荧光粉的合成及发光性能(英文)  

Synthesis and Cathodoluminescent Properties of Y_2O_3:Eu^(3+) Phosphor with Micron-sized Controllable Particles

作　　者：王洁琼[1] 杨森[1] 曹子君[1] 郑阿群[1] 孙占波[1] 宋晓平[1] 

机构地区：[1]西安交通大学物质非平衡与调控教育部重点实验室,陕西西安710049

出　　处：《稀有金属材料与工程》2014年第10期2316-2320,共5页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51071117);Major State Basic Research Development Program of China(“973” Program)(2012CB619401)

摘　　要：荧光粉的发光性能对其形貌非常敏感,特别是荧光粉的尺寸。场发射显示器所需的荧光粉应是微米级的球状,然而可控的微米级荧光粉受到很少的关注。因此,本实验通过改进的共沉淀法制备合成了几微米的近球型红色Y2O3:Eu3+荧光粉。该产品在1050℃,pH值为5.5时,形貌均匀,粒径分布为0.9~3.1μm,且发光亮度较商用的增加50%以上。结果表明,通过改良的共沉淀法可以制备出一种高质量的FED荧光粉。The luminescent properties of phosphors are sensitive to their morphologies,particularly to the sizes of phosphor particles.The optimal morphology of the phosphor for the field emission display（FED） is the microsized sphere-like particles.However,less attention has been paid to the phosphors with micron-size controlled particles.In this paper,we reported an improved co-precipitation method to synthesize the red-emitting Y2O3：Eu3＋ phosphor with the particle sizes controlled in several microns.The optimum phosphors were obtained at the calcination temperature of 1050 °C and pH=5.5,showing the sphere-like particles with the size distribution from 0.9 μm to 3.1 μm.Compared with the commercial phosphors,such optimum phosphors greatly enhance the cathodoluminescent properties and the corresponding luminescence intensity under the low excitation voltage of 1 kV is increased by 50%.Results indicate an effective way to develop the high-quality FED phosphors.

关 键 词：发光材料 场发射:制备 

分 类 号：O611.4[理学—无机化学] TQ422[理学—化学]