1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Modifications of the electronic structure of surface by chalcogen atoms: , , and
Rent:
Rent this article for
USD
10.1063/1.1790572
/content/aip/journal/jap/96/8/10.1063/1.1790572
http://aip.metastore.ingenta.com/content/aip/journal/jap/96/8/10.1063/1.1790572

Figures

Image of FIG. 1.
FIG. 1.

and XPS spectra recorded from surface after chemical passivation treatments in the nonaqueous reaction medium. The chalcogenide sources used are , , and . The nonaqueous solutions were made from anhydrous benzene, with the addition of 15-crown-5, an electron acceptor, and anthraquinone.

Image of FIG. 2.
FIG. 2.

Total density of states of (a) - and (b) -terminated surfaces before and after adsorption of a monolayer of group VI atoms. The indicated energy gap represents the band gap of bulk , and the zero energy is defined as the Fermi level , which is in the middle of the band gap for intrinsic .

Image of FIG. 3.
FIG. 3.

Evolution of the surface selenide content vs the processing time. The solid dots are the atomic ratio of -to-, derived from the XPS peak intensity ratio of and , with each processing time. The line is the least square fit of the kinetic data to the Langmuir-based adsorption mode in Eq. (5) at a 95% confidence limit.

Image of FIG. 4.
FIG. 4.

Evolution of the surface selenide content vs the processing time. The solid dots are the atomic ratio of -to-, derived from the XPS peak intensity ratio of and , with each processing time. The line is the least square fit of the kinetic data to the coverage-dependent adsorption model in Eq. (9) at a 95% confidence limit.

Image of FIG. 5.
FIG. 5.

Variation of the activation energy and binding energy as a function of coverage. Solid line is a plot of the increase in the activation energy vs atomic ratio of (C) using the determined fitting parameter. Dashed line is a plot of the change of binding energy as the coverage increases to a monolayer.

Tables

Generic image for table
Table I.

Room-temperature photoluminescence from samples after an hour chalcogenide treatments.

Generic image for table
Table II.

Surface chemical composition of after , , or nonaqueous treatments (, , or ). The values were estimated based on the XPS analysis, and the errors are within .

Loading

Article metrics loading...

/content/aip/journal/jap/96/8/10.1063/1.1790572
2004-10-04
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Modifications of the electronic structure of GaSb surface by chalcogen atoms: S, Se, and Te
http://aip.metastore.ingenta.com/content/aip/journal/jap/96/8/10.1063/1.1790572
10.1063/1.1790572
SEARCH_EXPAND_ITEM