Codeposition of ultrasmooth and high quantum efficiency cesium telluride photocathodes
Journal Article
·
· Physical Review Accelerators and Beams
Cesium telluride (CsTe) photocathodes have been the primary choice for electron sources by worldwide accelerators, due to their high quantum yield, stable performance in complex operation environments and long lifetime. In this paper we compared the traditional sequential and the newly developed coevaporation growth of CsTe photocathodes by describing the chemical and structural evolution of each growth method, using in situ, real time x-ray characterization. From the codeposition method, we were able to achieve similar to 2 nm surface roughness, high crystallinity and a quantum efficiency of 19% at 266 nm wavelength.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); National Institutes of Health (NIH)
- Grant/Contract Number:
- KC0407-ALSJNT-I0013; AC02-98CH1088; AC02-98CH10886; AC02-06CH11357; SC0012704; SC0009540
- OSTI ID:
- 1544577
- Alternate ID(s):
- OSTI ID: 1566298; OSTI ID: 1566750
- Report Number(s):
- BNL-212115-2019-JAAM; PRABCJ; 073401
- Journal Information:
- Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Vol. 22 Journal Issue: 7; ISSN 2469-9888
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 15 works
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