Determination of the interface electronic structure of L-cysteine/Ag(111) by Ultraviolet Photoelectron Spectroscopy and Photoelectron Yield Spectroscopy

2015 ◽  
pp. 33-38
Keyword(s):  
Electronic Structure ◽  
Photoelectron Spectroscopy ◽  
Ultraviolet Photoelectron Spectroscopy

scholarly journals Determination of the valence band edge of Fe oxide nanoparticles dispersed in aqueous solution through resonant photoelectron spectroscopy from a liquid microjet

2021 ◽  
Author(s):  
Giorgia Olivieri ◽  
Gregor Kladnik ◽  
Dean Cvetko ◽  
Matthew A. Brown
Keyword(s):  
Aqueous Solution ◽  
Electronic Structure ◽  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Band Edge ◽  
Photoemission Spectroscopy ◽  
Oxide Nanoparticles ◽  
Valence Band Edge ◽  
Resonant Photoemission

The electronic structure of hydrated nanoparticles can be unveiled by coupling a liquid microjet with a resonant photoemission spectroscopy.

Surface Band Structure Studies of Si Rich Reconstructions on 4H-SiC(1-100)

2005 ◽  
Vol 483-485 ◽  
pp. 547-550 ◽  
Author(s):  
Konstantin V. Emtsev ◽  
Thomas Seyller ◽  
Lothar Ley ◽  
A. Tadich ◽  
L. Broekman ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electron Diffraction ◽  
Photoelectron Spectroscopy ◽  
Low Energy ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Surface Band ◽  
X Ray ◽  
Low Energy Electron Diffraction ◽  
Different Temperatures ◽  
Low Energy Electron

We have investigated Si-rich reconstructions of 4H-SiC( 00 1 1 ) surfaces by means of low-energy electron diffraction (LEED), x-ray photoelectron spectroscopy (XPS), and angleresolved ultraviolet photoelectron spectroscopy (ARUPS). The reconstructions of 4H-SiC( 00 1 1 ) were prepared by annealing the sample at different temperatures in a flux of Si. Depending on the temperature different reconstructions were observed: c(2×2) at T=800°C, c(2×4) at T=840°C. Both reconstructions show strong similarities in the electronic structure.

BBonding in minerals: the application of PAX (photoelectron and X-ray) spectroscopy to the direct determination of electronic structure

1989 ◽  
Vol 53 (370) ◽  
pp. 153-164 ◽  
Author(s):  
David S. Urch
Keyword(s):  
Electronic Structure ◽  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Direct Determination ◽  
Energy Scale ◽  
X Ray ◽  
Electron Transitions ◽  
Dipole Selection Rule ◽  
The Individual

AbstractX-ray photoelectron spectroscopy can be used to measure the ionization energies of electrons in both valence band and core orbitals. As core vacancies are the initial states for X-ray emission, a knowledge of their energies for all atoms in a mineral enables all the X-ray spectra to be placed on a common energy scale. X-ray spectra are atom specific and are governed by the dipole selection rule. Thus the individual bonding roles of the different atoms are revealed by the fine structure of valence X-ray peaks (i.e. peaks which result from electron transitions between valence band orbitals and core vacancies). The juxtaposition of such spectra enables the composition of the molecular orbitals that make up the chemical bonds of a mineral to be determined.Examples of this approach to the direct determination of electronic structure are given for silica, forsterite, brucite, and pyrite. Multi-electron effects and developments involving anisotropic X-ray emission from single crystals are also discussed.

Hybrid interfaces of conjugate polymers: Band edge alignment studied by ultraviolet photoelectron spectroscopy

2004 ◽  
Vol 19 (7) ◽  
pp. 1917-1923 ◽  
Author(s):  
W.R. Salaneck ◽  
M. Fahlman
Keyword(s):  
Electronic Structure ◽  
Polymer Films ◽  
Photoelectron Spectroscopy ◽  
Inert Atmosphere ◽  
Device Fabrication ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Semiconducting Polymer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Hybrid Interface

The control of hybrid interfaces in polymer-based electronic devices may be enabling in many applications. The engineering of hybrid interface involves (requires) an understanding of the electronic structure of materials—one organic and one inorganic—that form the two halves of hybrid interfaces, as well as the electronic and chemical consequences of the coupling of the two. Although much literature exists describing the interfaces between vapor-deposited organic molecules and model molecules for polymers on the surfaces of clean metals in ultrahigh vacuum, few studies have been reported on spin-coated, semiconducting polymer films on realistic substrates. Spin coating in an inert atmosphere (or even air) is a central part of the process of the fabrication of polymer-based light-emitting devices and other modern polymer-based electronic components. Here, work on the electronic structure of semiconducting (conjugated) polymer films spin-coated onto selected inorganic substrates, carried out using ultraviolet photoelectron spectroscopy, is reviewed and summarized to generate a generalized picture of the hybrid interfaces formed under realistic device fabrication conditions.

Electronic Structure of One-Dimensional Biradical Molecular Chain

2014 ◽  
Vol 1605 ◽  
Author(s):  
H. Koike ◽  
K. Ogawa ◽  
T. Kubo ◽  
K. Uchida ◽  
M. Chikamatsu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Photoelectron Spectroscopy ◽  
Organic Molecules ◽  
Molecular Chain ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Deposition Method ◽  
One Dimensional ◽  
The One

ABSTRACTWe investigated electronic structure of one-dimensional biradical molecular chain which is constructed by exploiting the covalency between organic molecules of a diphenyl derivative of s-indacenodiphenalene (Ph2-IDPL). To control the crystallinity, we used gas deposition method. Ultraviolet photoelectron spectroscopy (UPS) revealed developed band structure with wide dispersion of the one-dimensional biradical molecular chain.

PHOTOEMISSION STUDIES OF Pd AND Pt IMPURITIES ON AND IN SILVER

1996 ◽  
Vol 10 (24) ◽  
pp. 1161-1174 ◽  
Author(s):  
W.-D. SCHNEIDER ◽  
F. PATTHEY ◽  
H.-V. ROY ◽  
M.-H. SCHAFFNER ◽  
B. DELLEY
Keyword(s):  
Electronic Structure ◽  
Coordination Number ◽  
Impurity Atom ◽  
Photoelectron Spectroscopy ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Many Body ◽  
Dilute Alloys ◽  
Impurity Model ◽  
Single Impurity ◽  
Different Temperatures

The electronic structure of Pd and Pt atoms adsorbed on the (100), (110), and (111) surfaces of silver and of the related dilute alloys has been studied at different temperatures using ultraviolet photoelectron spectroscopy (UPS). The observed differences in lineshape of the virtual bound palladium 4d (platinum 5d) state on isolated atoms supported on the differently oriented surfaces in comparison with an impurity atom embedded in the first layer and in the bulk are well accounted for by a many-body calculation performed within the Anderson single impurity model. This analysis clearly indicates a stronger sd-hybridization in the bulk than at the surface, consistent with the change in coordination number.

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