Central Technological Library of the University of Ljubljana (CTK)
13.
Growth and stoichiometry of the ▫$Cs_xSb$▫ surface film of a high-efficiency, multialkali-antimonide photocathode
Erjavec, Bojan
The heterojunction model of a highly efficient, semitransparent, multialkali-antimonide ▫$Na_2KSb(Cs,Sb)$▫ photocathode, consisting of a homogeneous, polycrystalline, p-type ▫$Na_2KSb$▫ base layer ...and an n-type ▫$Cs_xSb$▫ surface film ▫$(0\sx\se3)$▫ has been investigated. The thin ▫$Cs_xSb$▫ film was deposited onto the ▫$Na_2KSb$▫ base layer by alternating of Cs vapour and evaporations of Sb at elevated temperatures in an ultrahigh vacuum established in the standard image intensifier tube. An estimation of this film's thickness, which amounts to between 2.5 and 8.5 nm for the stoichometric ratio ▫$1\sex\se3$▫, was obtained using a hypothetical growth model of a thin film barrier one cluster-size thick on the photosensitive baselayer surface while analysing the photocurrent behaviour both during the introductions of Cs vapour and during the evaporations of Sb. This model was based on the growth of regular pyramids with a square net base 4X4 atoms and equilateral triangle sedes, on the apparent surface, and on a quantum mechanics scattering cross-section for elastic scattering of photoelectronics on the base boundry atoms. Comparisons of our calculated ▫$Cs_xSb-Cs$▫ dissociation vapour pressure relations with the reported ▫$P_{Cs}(T)$▫ expressions for Cs desorption from the ▫$Na_2KSb(Cs)$▫ photocathodes and of our estimated Sb MNN Auger signal asymmetry of the ▫$Cs_xSb$▫ compounds was obtained by means of a thermodynamically estimated valence charge transfer in ▫$Cs_xSb$▫, supposing their mutual linear dependence.
It was not necessary to add the material to the shelf.
Bibliographic material was successfully added on shelf.
Adding bibliographical material on shelf was not successful.
Material is already on the shelf.
Permalink
URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year
Impact factor
Edition
Category
Classification
JCR
SNIP
JCR
SNIP
JCR
SNIP
JCR
SNIP
Select the library membership card:
DRS,
in which the journal is indexed
Database name
Field
Year
Links to authors' personal bibliographies
Links to information on researchers in the SICRIS system
Subject headings in COBISS General List of Subject Headings
Select pickup location
The material from the parent unit is free. If the material is delivered to the pickup location from another unit, the library may charge you for this service.
