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Combined Infrared Photoemission From Cs 3 Sb
Author(s) -
Hora H.,
Kabiersch G. B.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680270216
Subject(s) - infrared , photon energy , radiation , wavelength , atomic physics , cathode , photon , photoemission spectroscopy , inverse photoemission spectroscopy , radiant intensity , materials science , optoelectronics , chemistry , optics , physics , x ray photoelectron spectroscopy , nuclear magnetic resonance
The time dependence of the photoemission current of Cs 3 Sb cathodes shows at high light intensities a Boltzmann factor with an activation energy of 0.08 eV (according to an IR radiation of 15 μm wavelength). In order to study the influence of infrared radiation on the usual photoemission process Cs 3 Sb layers are irradiated with broad band radiation of 2 μm wavelength. This infrared radiation alone produces no emission current. The photoemission caused by light of a sufficient high intensity to which the cathode is sensitive, however, is changed by the infrared radiation up to quantum efficiencies of 10 −3 additionally emitted eletcrons/IR photon. This combined photoemission can be a positive or negative effect.