基于沉淀工艺制作四脚氧化锌纳米材料场致发射阴极的研究  

Preparation of tetrapod-shaped ZnO nanomaterial field emission cathodes by deposition method

作　　者：覃华芳[1] 郭太良[1] 

机构地区：[1]福州大学化学化工学院,福州350006

出　　处：《物理学报》2008年第2期1224-1228,共5页Acta Physica Sinica

基　　金：国家863计划平板显示重大专项(批准号:2005AA303G10);福建省科技重大专项(批准号:2004HZ01-2);福建省自然科学基金重点项目(批准号:A0420001)资助的课题.~~

摘　　要：采用沉淀法制备四脚氧化锌纳米材料场致发射阴极,将阴极和荧光屏封装起来抽真空并对屏施加电压,测试阴极的发射电流和荧光屏的发光亮度.利用沉淀法制备出面积为(13×15)cm2的阴极,测试结果表明,硅酸钾体积百分比在5·0×10-3—8·3×10-3范围,硝酸钡浓度在5·0×10-4—7·7×10-4M范围,四脚氧化锌的浓度在8·2×10-4—1·2×10-3M范围时,阴极发射电流最大,荧光屏的发光亮度峰值可达到60cd/cm2,平均亮度为48cd/cm2.Tetrapod-shaped ZnO nanomaterial field emission cathode was preparated by deposition method. To the high-vacuum flat capsulation with phosphor screen and cathode was applied a voltage to test the cathode emission current and the phosphor screen brightness. For the cathode with total area 13×15 cm^2 , the test results showed that when the volume percentage of K2SiO3 ranged from5.0 ×10^-3 to 8.3×10^-3, concentration of Ba（NO3）2 arranged from 5.0×10^-4 to 7.7×10^-4 M, and concentration of tetrapod-shaped ZnO arranged from 8.2×10^-4 to 1.2×10^-3M, the cathode emission current was the largest, and phosphor screen at peak brightness could reach 60 cd/cm^2. The average brightness was 48 cd/cm^2.

关 键 词：场致发射 沉淀法 显示屏亮度 

分 类 号：O462.4[理学—电子物理学] TQ132.41[理学—物理]