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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 7 — Jul. 1, 2013
  • pp: 948–953

Effect of vacuum treatment on CsI photocathode performance in UV photon detectors

Baishali Garai, Radhakrishna V., and K. Rajanna  »View Author Affiliations

Optical Materials Express, Vol. 3, Issue 7, pp. 948-953 (2013)

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CsI can be used as a photocathode material in UV photon detectors. The detection efficiency of the detector strongly depends on the photoemission property of the photocathode. CsI is very hygroscopic in nature. This limits the photoelectron yield from the photocathode when exposed to humid air even for a short duration during photocathode mounting or transfer. We report here on the improvement of photoemission properties of both thick (300 nm) and thin (30 nm) UV-sensitive CsI film exposed to humid air by the process of vacuum treatment.

© 2013 OSA

OCIS Codes
(040.1880) Detectors : Detection
(040.5160) Detectors : Photodetectors
(040.5250) Detectors : Photomultipliers
(040.7190) Detectors : Ultraviolet
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Detector Materials

Original Manuscript: March 15, 2013
Revised Manuscript: May 25, 2013
Manuscript Accepted: May 28, 2013
Published: June 6, 2013

Baishali Garai, Radhakrishna V., and K. Rajanna, "Effect of vacuum treatment on CsI photocathode performance in UV photon detectors," Opt. Mater. Express 3, 948-953 (2013)

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