Brightness of femtosecond nonequilibrium photoemission in metallic photocathodes at wavelengths near the photoemission threshold

2018 ◽  
Vol 124 (24) ◽  
pp. 244903 ◽  
Author(s):  
Jai Kwan Bae ◽  
Ivan Bazarov ◽  
Pietro Musumeci ◽  
Siddharth Karkare ◽  
Howard Padmore ◽  
...  
Keyword(s):  
Photoemission Threshold

Shift of the photoemission threshold in III–V and II–VI semiconductors

JETP Letters ◽  
2014 ◽  
Vol 99 (6) ◽  
pp. 329-332
Author(s):  
A. A. Karpushin ◽  
A. N. Sorokin
Keyword(s):  
Photoemission Threshold

Electronic Structures of Dyes and Phthalocyanines Estimated with “Photo-Electron Spectroscopy in Air (PESA)”

2007 ◽  
Vol 1029 ◽  
Author(s):  
Yoshiyuki Nakajima ◽  
D. Yamashita ◽  
A. Ishizaki ◽  
B. Pellissier ◽  
M. Uda
Keyword(s):  
Molecular Orbital ◽  
Density Of States ◽  
Calculation Method ◽  
Electronic Structures ◽  
Electron Spectroscopy ◽  
Molecular Orbital Calculation ◽  
Ionization Potentials ◽  
Incident Photon ◽  
Threshold Energies ◽  
Photoemission Threshold

AbstractThe near-edge electronic structures of several dyes and phtalocyanines were investigated using Photo-Electron Spectroscopy in Air (PESA). The ionization potentials (IPs) of N3, N719, Z907, D102, D149 and D205 were derived from observed photoemission threshold energies to be 5.88, 5.47, 5.44, 5.53, 5.44 and 5.49eV, respectively. Density of states (DOS) of Fe-, Ni-, Cu- and H2-phthalocyanines were deduced from differentiation of observed photoemission yields with incident photon energies. DOS thus obtained were well compared with calculated ones estimated with use of the DV-Xα molecular orbital calculation method.

Anomalous photoemission threshold in high-T c oxide superconductor with Cs and K submonolayers

1994 ◽  
Vol 7 (2) ◽  
pp. 489-491
Author(s):  
G. V. Benemanskaya ◽  
M. N. Lapushkin ◽  
V. S. Vikhnin
Keyword(s):  
Oxide Superconductor ◽  
Photoemission Threshold

UV Photoemission Study of Defect States in Polyethylene Films

1983 ◽  
Vol 24 ◽  
Author(s):  
W. Pong ◽  
D. Brandt ◽  
A. Sato ◽  
W. Imaino ◽  
M. Farrow
Keyword(s):  
Photoelectron Spectra ◽  
Defect States ◽  
Vacuum Level ◽  
Polyethylene Films ◽  
Contact Charging ◽  
Gold Substrates ◽  
Photoemission Study ◽  
Diffuse Glow ◽  
Reduced Pressures ◽  
Photoemission Threshold

ABSTRACTPhotoemission from evaporated Polyethylene films was measured in the spectral region between 6 and 11 eV. A significant increase in photoemission yield was observed after the films were exposed to O2 and to air containing ozone and ions from a diffuse glow discharge at reduced pressures. The enhancement can be attributed to oxygen and ozone reacting with the defects in the evaporated polyethylene films, which are unsaturated carbon double bonds in the polyethylene chain. For the ozonized polymer films deposited on gold substrates, the photoelectron spectra show a relatively high density of occupied states at 6.8 ± 0.3 eV below the vacuum level of the polymer and a photoemission threshold of 3.8 ± 0.3 eV. The implication of the results to contact charging of polyethylene is discussed.

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