High resolution x-ray photoelectron spectroscopy and INDO/S–CI study of the core electron shakeup states of pyromellitic dianhydride-4,4′-oxydianiline polyimide

1999 ◽  
Vol 17 (5) ◽  
pp. 2791-2799 ◽  
Author(s):  
Y. Nakayama ◽  
P. Persson ◽  
S. Lunell ◽  
S. P. Kowalczyk ◽  
B. Wannberg ◽  
...  
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Pyromellitic Dianhydride ◽  
Core Electron ◽  
X Ray ◽  
The Core

A study of the core electron binding energies of ozone by x-ray photoelectron spectroscopy and the Xα scattered wave method

1977 ◽  
Vol 49 (2) ◽  
pp. 213-217 ◽  
Author(s):  
M.Salim Banna ◽  
David C. Frost ◽  
Charles A. McDowell ◽  
Louis Noodleman ◽  
Barry Wallbank
Keyword(s):  
Photoelectron Spectroscopy ◽  
Scattered Wave ◽  
Binding Energies ◽  
Wave Method ◽  
Core Electron ◽  
X Ray ◽  
The Core ◽  
Electron Binding Energies ◽  
Electron Binding

X-ray photoelectron spectroscopy of Cu–In–Se–N and Cu–In–Se thin films

1992 ◽  
Vol 7 (8) ◽  
pp. 1984-1986 ◽  
Author(s):  
Shigemi Kohiki ◽  
Mikihiko Nishitani ◽  
Takayuki Negami ◽  
Takahiro Wada
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Photoelectron Spectroscopy ◽  
Binding Energies ◽  
Core Electron ◽  
X Ray ◽  
The Core ◽  
Bonding Interaction ◽  
Electron Binding Energies ◽  
Electron Binding

The Cu, In, and Se core-level electron binding energies of the p-type Cu–In–Se–N thin film were larger than those of the n-type Cu–In–Se thin film. The positive shift of the core-electron binding energies for the Cu–In–Se–N film is consistent with that expected from the conduction types of the films. Holes were positioned in the Cu–Se antibonding orbitals of the Cu–In–Se–N film. The analysis using the Auger parameter revealed that the Cu–Se bonding interaction is stronger for the Cu–In–Se–N film than for the Cu–In–Se film.

scholarly journals Following excited-state chemical shifts in molecular ultrafast x-ray photoelectron spectroscopy

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
D. Mayer ◽  
F. Lever ◽  
D. Picconi ◽  
J. Metje ◽  
S. Alisauskas ◽  
...  
Keyword(s):  
Excited State ◽  
Chemical Shift ◽  
Photoelectron Spectroscopy ◽  
Chemical Shifts ◽  
Excited Molecule ◽  
Charge Motion ◽  
Core Electron ◽  
Xps Spectra ◽  
X Ray ◽  
State Chemical

AbstractThe conversion of photon energy into other energetic forms in molecules is accompanied by charge moving on ultrafast timescales. We directly observe the charge motion at a specific site in an electronically excited molecule using time-resolved x-ray photoelectron spectroscopy (TR-XPS). We extend the concept of static chemical shift from conventional XPS by the excited-state chemical shift (ESCS), which is connected to the charge in the framework of a potential model. This allows us to invert TR-XPS spectra to the dynamic charge at a specific atom. We demonstrate the power of TR-XPS by using sulphur 2p-core-electron-emission probing to study the UV-excited dynamics of 2-thiouracil. The method allows us to discover that a major part of the population relaxes to the molecular ground state within 220–250 fs. In addition, a 250-fs oscillation, visible in the kinetic energy of the TR-XPS, reveals a coherent exchange of population among electronic states.

Determination of the oxidation state of manganese in lepidolite by X-ray photoelectron spectroscopy

Clay Minerals ◽  
1982 ◽  
Vol 17 (4) ◽  
pp. 477-481 ◽  
Author(s):  
S. Evans ◽  
E. Raftery
Keyword(s):  
Oxidation State ◽  
Photoelectron Spectroscopy ◽  
Electronic Spectroscopy ◽  
Binding Energies ◽  
Core Electron ◽  
X Ray ◽  
Occasional Occurrence ◽  
The Subject ◽  
Electron Binding Energies

It is usually assumed that the oxidation state of the small proportion of Mn sometimes present in micas is +2, although there is evidence from electronic spectroscopy (Burns, 1970) for at least the occasional occurrence of Mn(III) in manganophyllite. We describe here X-ray photoelectron spectroscopic (XPS) measurements on the Mn in a Norwegian lepidolite which was the subject of a concurrent structural study by X-ray photoelectron diffraction (Evans & Raftery, 1982). To establish the Mn oxidation state we have compared the Mn2p core-electron binding energies (BE), the Mn2P3/2-O ls BE differences, and the Mn2p XPS peak profiles from the four common oxides of manganese (MnO, Mn3O4, Mn2O3 and MnO2) with those from the lepidolite. A re-examination of these oxides was undertaken because the agreement between reports in the literature was unsatisfactory, and uncertainty existed concerning the integrity of some of the surfaces previously examined.

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