A Monte-Carlo simulation of low energy photoelectron scattering in Cs2Te

Gabriele Ferrini, Fulvio Parmigiani, Paolo Michelato

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

16 Citazioni (Scopus)

Abstract

The quantitative description of low kinetic energy photoelectron emission in semiconductors is still an open question. In this article a model is developed to simulate the photoexcitation and transport of low kinetic energy electrons in Cs2Te. The statistical extension of the model, by Monte Carlo trajectory calculations, gives photon energy dependent quantum yields in agreement with experimental data. This is regarded as evidence that for near threshold photoemission in Cs2Te the dominant scattering mechanism is electron-phonon, while the mean energy scattering energy loss is 5 meV and the electron mean free path is 3 nm. The spatial distribution and the time response (0.4 ps) of the photoemitted electrons are estimated.
Lingua originaleEnglish
pagine (da-a)21-26
Numero di pagine6
RivistaSolid State Communications
Volume106
DOI
Stato di pubblicazionePubblicato - 1998

Keywords

  • CESIUM TELLURIDE PHOTOCATHODES
  • CRYSTAL-STRUCTURE
  • Monte-Carlo
  • photoemission

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