Ultraviolet photoemission

Ultraviolet Photoelectron Spectroscopy Ultraviolet Photoemission Spectroscopy Molecular Photoelectron Spectroscopy... 

Fig. 11. Composition dependence of the resistivity p x) for thick films of Cbo doped with Na, K, Rb, and Cs. Points indicate where exposure to the alkali-metal source was stopped and x-ray and ultraviolet photoemission spectra were acquired to determine the concentration x. The labels indicate the known fulleride phases at 300 K. The minima in p x) occur for stoichiometries corresponding to NaQCeo, K.iCeo and Cs,.,.Cfio[ll3].

Ultraviolet photoemission spectroscopy Wavenumbers 8.065cm" = ImeV, 2000cm" length of 5 /tm... 

Gopel et al. (135a) have reported ultraviolet photoemission spectra (UPS) of the interaction of 02 with the (lOlO) face of a single crystal of ZnO. Between 300 and 600 K, chemisorption of oxygen is observed on stoichiometric ZnO (lOlO) surfaces and UPS difference spectra indicate peaks at... 

Ultraviolet photoemission spectra have also been used to investigate the electronic band structure of solid CsAu. The apparent spin-orbit... 

Takahashi, T., H. Tokailin, T. Sagawa, and H. Suematsu. 1985. Angle-resolved ultraviolet photoemission study of potassium-graphite intercalation compound C8K. Synth. Metals 12 239-244. 

Ultraviolet photoemission spectroscopy( UPS) measurements of a Pd/ SiCVa-Si H structure indicate (Fortunato et al., 1984) that the mechanism responsible for the transport property variations is a change in the contact potential. In these experiments a few angstroms of a-Si have been deposited by an in situ evaporation onto a Pd/SiO substrate. Figure 5 shows the photoemission spectra obtained by synchrotron radiation at a photon energy of 30 eV and for three different conditions (1) after the a-Si deposition, (2) after the H2 exposure at 10-2 Torr for 2 min, and (3) after 02 exposure at 5 X 10-5 Torr and 110°C for 7 min. 

According to a combination of ultraviolet photoemission spectroscopy (UPS), LEED and ion scattering spectroscopy (ISS),53 the PH3 -exposed surface is covered by a P atom layer if annealed to 900 [K], This observation is also made if PH3 is adsorbed on the surface at 900 [K],... 

Fig. 24. Ultraviolet photoemission (hv = 7.7 eV) and analyzed field emission spectra of tungsten as a function of exposure to H2. Log R of the field emission results is related to the local density of states at the surface. Ref. (61)...

Considering the valence levels, the synergistic effect of combining spectroscopic measurements with theoretical calculations is illustrated by two pairs of chapters (1) ultraviolet photoemission and optical absorption data compared to a spectroscopically parameterized CNDO/S3 model, and (2) x-ray photoemission compared to ab initio and intermediate approximation MO calculations. 

Angle-resolved ultraviolet photoemission spectroscopy ARUPS Electrons photoemitted from the valence and conduction bands of a surface are detected as a function of angle. This gives information on the dispersion of these bands (which is related to surface structure) and also structural information from the diffraction of the emitted electrons. Valence band structure... 

Henrich, V. E. (1979). Ultraviolet photoemission studies of molecular adsorption on oxide surfaces. Prog. Surf. Sci. 9, 143-64. 

Fig. 3. Angle resolved He ll ultraviolet photoemission spectrum of a V205(010) surface sample taken at normal incidence from Refs. [93,94].

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