| Title | Ag-BaO薄膜内场助光电发射增强现象研究 |
| Other Titles | Photoemission enhancement of Ag-BaO thin films with internal field-assisted structure |
| Authors | 张琦锋北京大学电子学系 吴锦雷 |
| Affiliation | 北京大学电子学系 北京100871 |
| Keywords | 内场助光电发射 能带弯曲 金属超微粒子 Ag-BaO薄膜 internal field-assisted photoemission energy-band bending metallic ultrafine particles Ag-BaO thin film |
| Issue Date | 2000 |
| Publisher | 物理学报 |
| Citation | 物理学报.2000,(11),2191-2195. |
| Abstract | 通过在Ag BaO薄膜表面真空沉积 10nm厚的银电极 ,成功制备了内场助结构Ag BaO光电阴极 .测试结果显示 ,Ag BaO薄膜光电发射电流随内场助偏压的增大而上升 .理论分析表明 ,Ag BaO薄膜内场助光电发射增强现象产生的机理在于内场助作用下Ag微粒和BaO介质间等效界面位垒的减小及薄膜表面真空能级的相对下降 . The Ag-BaO photocathode with internal field-assisted structure was successfully fabricated through depositing silver electrode on the surface of Ag-BaO thin film. Photoemission enhancement was observed when the internal field-assisted bias was applied to the Ag-BaO thin film. Theoretical analysis shows that enhanced photoemission can be attributed to the decrease of interfacial barrier between Ag particles and BaO matrix, and the degradation of vacuum level at the surface. |
| URI | http://hdl.handle.net/20.500.11897/22477 |
| ISSN | 1000-3290 |
| DOI | 10.3321/j.issn:1000-3290.2000.11.015 |
| Indexed | SCI(E) EI 中文核心期刊要目总览(PKU) 中国科学引文数据库(CSCD) |
| Appears in Collections: | 信息科学技术学院 |
