Photoelectron spectroscopy of FeO− and FeO−2: Observation of low‐spin excited states of FeO and determination of the electron affinity of FeO2

1995 ◽  
Vol 102 (22) ◽  
pp. 8714-8717 ◽  
Author(s):  
Jiawen Fan ◽  
Lai‐Sheng Wang
Keyword(s):  
Excited States ◽  
Electron Affinity ◽  
Photoelectron Spectroscopy

scholarly journals An Insight into Chemistry and Structure of Colloidal 2D-WS2 Nanoflakes: Combined XPS and XRD Study

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1969
Author(s):  
Riccardo Scarfiello ◽  
Elisabetta Mazzotta ◽  
Davide Altamura ◽  
Concetta Nobile ◽  
Rosanna Mastria ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Xrd Analysis ◽  
Crystal Habit ◽  
Phase Identification ◽  
X Ray Diffraction ◽  
X Ray ◽  
Morphological Evaluation ◽  
Rational Understanding ◽  
Structural Inspection

The surface and structural characterization techniques of three atom-thick bi-dimensional 2D-WS2 colloidal nanocrystals cross the limit of bulk investigation, offering the possibility of simultaneous phase identification, structural-to-morphological evaluation, and surface chemical description. In the present study, we report a rational understanding based on X-ray photoelectron spectroscopy (XPS) and structural inspection of two kinds of dimensionally controllable 2D-WS2 colloidal nanoflakes (NFLs) generated with a surfactant assisted non-hydrolytic route. The qualitative and quantitative determination of 1T’ and 2H phases based on W 4f XPS signal components, together with the presence of two kinds of sulfur ions, S22− and S2−, based on S 2p signal and related to the formation of WS2 and WOxSy in a mixed oxygen-sulfur environment, are carefully reported and discussed for both nanocrystals breeds. The XPS results are used as an input for detailed X-ray Diffraction (XRD) analysis allowing for a clear discrimination of NFLs crystal habit, and an estimation of the exact number of atomic monolayers composing the 2D-WS2 nanocrystalline samples.

scholarly journals Hot electron production and diffuse excited states in C70, C82, and Sc3N@C80 characterized by angular-resolved photoelectron spectroscopy

2013 ◽  
Vol 139 (8) ◽  
pp. 084309 ◽  
Author(s):  
J. Olof Johansson ◽  
Elvira Bohl ◽  
Gordon G. Henderson ◽  
Benoit Mignolet ◽  
T. John S. Dennis ◽  
...  
Keyword(s):  
Excited States ◽  
Photoelectron Spectroscopy ◽  
Hot Electron ◽  
Electron Production
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