摘要
用阴极电泳的方法在Re衬底上制备了LaB6薄膜,用扫描电镜、X射线光电子能谱对样品的表面状况、化学组分进行了分析。经过真空烧结,采用真空热电子发射法测出了LaB6薄膜的逸出功。使用Richardson直线法测量薄膜的逸出功为2.56 eV,具有良好的电子发射性能。
LaB6 thin films were deposited on the Re ribbon by cathode electrophoretic method, the surface morphology and composition of the films were analyzed by scanning electron microscope and X-ray photoelectron spectrometer. After vacuum sinter, the work function of the films was measured by thermal electron beam method. The measurement of the work function was 2.56 eV by Richardson line method. It showed excellent electron emission characteristics.
出处
《真空电子技术》
2007年第5期44-47,共4页
Vacuum Electronics
关键词
LaB6薄膜
真空烧结
电泳
热发射
逸出功
LaB6 film
Vacuum sinter
Cathode electrophoresis
Thermal emission
Work function
