scholarly journals Direct Probing of Gap States and Their Passivation in Halide Perovskites by High-Sensitivity, Variable Energy Ultraviolet Photoelectron Spectroscopy

2021 ◽  
Author(s):  
Igal Levine ◽  
Kohei Shimizu ◽  
Alberto Lomuscio ◽  
Michael Kulbak ◽  
Carolin Rehermann ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Sensitivity ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Halide Perovskites ◽  
Gap States ◽  
Variable Energy

Gap States of a Polyethylene Model Oligomer Observed by Using High-Sensitivity Ultraviolet Photoelectron Spectroscopy

2019 ◽  
Vol E102.C (2) ◽  
pp. 168-171 ◽  
Author(s):  
Yuki YAMAGUCHI ◽  
Kohei SHIMIZU ◽  
Atsushi MATSUZAKI ◽  
Daisuke SANO ◽  
Tomoya SATO ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Sensitivity ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Gap States

Photoemission Study of Metal-Deposited p-Sexiphenyl Film

1999 ◽  
Vol 598 ◽  
Author(s):  
E. Ito ◽  
N. Koch ◽  
H. Oji ◽  
H. Ishii ◽  
G. Leising ◽  
...  
Keyword(s):  
Chemical Reaction ◽  
Photoelectron Spectroscopy ◽  
Electron Spectroscopy ◽  
Alkali Metals ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Level Shift ◽  
Vacuum Level ◽  
X Ray ◽  
Photoemission Study ◽  
Gap States

ABSTRACTMetal deposition on a p-sexiphenyl (6P) film was studied by ultraviolet photoelectron spectroscopy (UPS), metastable atom electron spectroscopy (MAES), and X-ray photoelectron spectroscopy (XPS). The deposited metals were Au, Mg, and several alkali metals (K, Na, Rb, and Cs). No chemical reaction between 6P and Au or Mg was observed in the measured spectra, while additional gap states appeared in the UPS and MAES spectra by deposition of the alkali metals. The diffusion of Au and Mg atoms into the 6P film was observed in the MAES spectra. We found the trend of the vacuum level shift is different between the systems of the 6P on the Au and its reversed systems (Au on the 6P film), suggesting the different formation of the interface depending on the deposition sequence.

Surface potential of liquid microjet investigated using extreme ultraviolet photoelectron spectroscopy

2020 ◽  
Vol 152 (14) ◽  
pp. 144503
Author(s):  
Junichi Nishitani ◽  
Shutaro Karashima ◽  
Christopher W. West ◽  
Toshinori Suzuki
Keyword(s):  
Surface Potential ◽  
Photoelectron Spectroscopy ◽  
Extreme Ultraviolet ◽  
Ultraviolet Photoelectron Spectroscopy

Vacuum ultraviolet photoelectron spectroscopy of transient species

1981 ◽  
Vol 44 (5) ◽  
pp. 1059-1066 ◽  
Author(s):  
J.M. Dyke ◽  
N.B.H. Jonathan ◽  
A. Morris ◽  
M.J. Winter
Keyword(s):  
Photoelectron Spectroscopy ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Transient Species

Jellyfish-like few-layer graphene nanoflakes: high paramagnetic response alongside increased interlayer interaction

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Alexander Ulyanov ◽  
Dmitrii Stolbov ◽  
Serguei Savilov
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Sensitivity ◽  
Paramagnetic Centers ◽  
Interlayer Interaction ◽  
Paramagnetic Resonance ◽  
X Ray ◽  
Graphene Nanoflakes ◽  
Few Layer Graphene ◽  
Electron Paramagnetic ◽  
Hydrocarbon Pyrolysis

Abstract Jellyfish-like graphene nanoflakes (GNF), prepared by hydrocarbon pyrolysis, are studied with electron paramagnetic resonance (EPR) method. The results are supported by X-ray photoelectron spectroscopy (XPS) data. Oxidized (GNFox) and N-doped oxidized (N-GNFox) flakes exhibit an extremely high EPR response associated with a large interlayer interaction which is caused by the structure of nanoflakes and layer edges reached by oxygen. The GNFox and N-GNFox provide the localized and mobile paramagnetic centers which are silent in the pristine (GNF p ) and N-doped (N-GNF) samples. The change in the relative intensity of the line corresponding to delocalized electrons is parallel with the number of radicals in the quaternary N-group. The environment of localized and mobile electrons is different. The results can be important in GNF synthesis and for explanation of their features in applications, especially, in devices with high sensitivity to weak electromagnetic field.

Ultraviolet Photoelectron Spectroscopy of Polymers

2006 ◽  
Vol 455 (1) ◽  
pp. 193-203 ◽  
Author(s):  
M. P. de Jong ◽  
R. Friedlein ◽  
W. Osikowicz ◽  
W. R. Salaneck ◽  
M. Fahlman
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ultraviolet Photoelectron Spectroscopy
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