E-resources
-
YAMAMOTO, Hiroyuki
BUNSEKI KAGAKU, 01/2020, Volume: 69, Issue: 7.8Journal Article
Non-destructive depth profiling with better depth resolution is required for the characterization of nano-materials. Sputter etching is commonly used as the conventional way of depth profiling. However, it causes damage because of atomic mixing and surface roughening by ion bombardment. X-ray photoelectron spectroscopy (XPS) is typically non-destructive analysis, however, XPS with a fixed excitation energy source cannot provide a depth profile without an additional technique. On the other hand, analyzing depth of XPS can be varied with energy tunable excitation source, such as synchrotron-radiation (SR), since the escape depth of photoelectrons depends on their kinetic energy. We can obtain XPS spectra from different analyzing depths by varying the excitation energy. This technique can provide depth profiles of the elements and their chemical states non-destructively. In the present study, thermally oxidized and O2+ ion implanted Si(100) surface, initial oxidation process of Fe-Cr (18 %) alloy surface, Ge (2∼4 nm) thin films on Si(100) have been analyzed. The measurements have been performed at KEK-PF, Tsukuba using 1.8∼6.0 keV X-ray. XPS spectra clearly show depth dependences, which can be interpreted into depth profile. Chemical state changes at the surface/interface are also clearly observed.
Author
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.