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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
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.~~
关键词
场致发射
沉淀法
显示屏亮度
field emission, deposition method, display brightness
