Near edge X-ray absorption fine structure spectroscopy of chemically modified porous silicon

2004 ◽  
Vol 135 (2-3) ◽  
pp. 143-147 ◽  
Author(s):  
Y.F. Hu ◽  
R. Boukherroub ◽  
T.K. Sham
Keyword(s):  
Fine Structure ◽  
Porous Silicon ◽  
X Ray ◽  
Chemically Modified ◽  
Absorption Fine ◽  
X Ray Absorption

Reductive deposition of palladium on porous silicon from aqueous solutions of palladium dichloride: an x-ray absorption fine structure study

Langmuir ◽  
1993 ◽  
Vol 9 (12) ◽  
pp. 3441-3445 ◽  
Author(s):  
I. Coulthard ◽  
D. T. Jiang ◽  
J. W. Lorimer ◽  
T. K. Sham ◽  
X. H. Feng
Keyword(s):  
Fine Structure ◽  
Porous Silicon ◽  
Aqueous Solutions ◽  
Structure Study ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

Unimportance of Siloxene in Luminescent Porous Silicon as Determined by Nexafs & Exafs

1993 ◽  
Vol 298 ◽  
Author(s):  
S.L. Friedman ◽  
M.A. Marcus ◽  
D.L. Adler ◽  
Y.-H. Xie ◽  
T.D. Harris ◽  
...  
Keyword(s):  
Fine Structure ◽  
Porous Silicon ◽  
Room Temperature ◽  
Emission Spectra ◽  
Porous Si ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption ◽  
Room Temperature Luminescence ◽  
Combined Data

AbstractNear-edge-- and extended--x-ray absorption fine structure measurements, as well as luminescence excitation and emission spectra, were obtained from samples of porous Si and siloxene. Contrary to a recently proposed explanation for the room temperature luminescence in porous Si, the combined data indicate that siloxene is not principally responsible for the observed effect.

Si K-edge X-ray absorption fine structure studies of porous silicon

1992 ◽  
Vol 70 (10-11) ◽  
pp. 813-818 ◽  
Author(s):  
T. K. Sham ◽  
X. H. Feng ◽  
D. T. Jiang ◽  
B. X. Yang ◽  
J. Z. Xiong ◽  
...  
Keyword(s):  
Fine Structure ◽  
Porous Silicon ◽  
Surface Oxygen ◽  
Porous Si ◽  
Oxygen Compound ◽  
X Ray ◽  
Absorption Fine ◽  
Fine Structures ◽  
X Ray Absorption ◽  
Si Wafer

X-ray absorption fine structure (XAFS) spectra of porous Si prepared by the anodization of a Si wafer in aqueous HF solution have been obtained with synchrotron radiation. The Si K-edge near-edge X-ray absorption fine structure and extended X-ray absorption fine structures clearly show that porous silicon samples that have been exposed to the ambient environment (untreated) have an oxide layer, while the "clean" (treated) porous Si sample regenerated by HF treatment shows some degradation in its crystallinity. Noticeable differences in the XAFS between porous Si and crystalline Si are noted. The results and implications of this observation and the chemistry leading to the formation of surface oxygen compound are discussed.

Structure of magnetic thin films and nanostructures studied by extended X-ray absorption fine structure

2000 ◽  
Vol 454-456 ◽  
pp. 723-728 ◽  
Author(s):  
H. Magnan ◽  
P. Le Fèvre ◽  
A. Midoir ◽  
D. Chandesris ◽  
H. Jaffrès ◽  
...  
Keyword(s):  
Thin Films ◽  
Fine Structure ◽  
Magnetic Thin Films ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

Kinetic analysis of Ag particle redispersion into ZSM-5 in the presence of coke using in situ XAFS

2021 ◽  
Author(s):  
Kazumasa Murata ◽  
Junya Ohyama ◽  
Atsushi Satsuma
Keyword(s):  
Fine Structure ◽  
Kinetic Analysis ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Absorption Fine ◽  
Ag Particles ◽  
In Situ Xafs ◽  
Ag Particle ◽  
X Ray Absorption

In the present study, the redispersion behavior of Ag particles on ZSM-5 in the presence of coke was observed using in situ X-ray absorption fine structure (XAFS) spectroscopy.

scholarly journals Backbonding contributions to small molecule chemisorption in a metal–organic framework with open copper(i) centers

2021 ◽  
Author(s):  
Gregory M. Su ◽  
Han Wang ◽  
Brandon R. Barnett ◽  
Jeffrey R. Long ◽  
David Prendergast ◽  
...  
Keyword(s):  
Fine Structure ◽  
Small Molecule ◽  
Metal Organic Framework ◽  
X Ray ◽  
Metal Site ◽  
Absorption Fine ◽  
Metal Organic ◽  
X Ray Absorption ◽  
Organic Framework

In situ near edge X-ray absorption fine structure spectroscopy directly probes unoccupied states associated with backbonding interactions between the open metal site in a metal–organic framework and various small molecule guests.

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