NEGATIVE ELECTRON-AFFINITY MULTIALKALI PHOTOCATHODES

Authors
GUO TL GAO HR
Citation
Tl. Guo et Hr. Gao, NEGATIVE ELECTRON-AFFINITY MULTIALKALI PHOTOCATHODES, Applied surface science, 70-1, 1993, pp. 355-358
Citations number
19
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
70-1
Year of publication
1993
Part
A
Pages
355 - 358
Database
ISI
SICI code
0169-4332(1993)70-1:<355:NEMP>2.0.ZU;2-1
Abstract
A technology for fabricating negative electron affinity (NEA) multi-al kali photocathodes is described. A reflection-mode NEA multi-alkali ph otocathode of (Na2KSb-Cs)-O-Cs structure with a maximum photosensitivi ty of 700 muA/lm is fabricated. The quantum yield of the NEA (Na2KSb-C s)-O-Cs photocathode is presented. The roles of cesium and oxygen, the surface-layer model, and the energy diagram of the photocathode thus fabricated are also discussed.