The effect of morphology and surface composition on radiation resistance of heterogeneous material CdS-PbS

As a result of a complex study of the heterophase photosensitive material CdS-PbS by the methods of scanning electron microscopy and Auger spectrometry, it has been found that the radiation resistance of this material depends on the morphology and phase composition at its surface. It is shown that,...

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Bibliographic Details
Published inSemiconductors (Woodbury, N.Y.) Vol. 45; no. 7; pp. 888 - 893
Main Authors Malyar, I. V., Stetsyura, S. V.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.07.2011
Springer
Subjects
AGGLOMERATION
CADMIUM SULFIDES
Interfaces
LAYERS
LEAD SULFIDES
Magnetic Materials
Magnetism
MATERIALS SCIENCE
MORPHOLOGY
Nuclear radiation
OXYGEN
Physics
Physics and Astronomy
Public television
SCANNING ELECTRON MICROSCOPY
SPECTROSCOPY
Sulfur compounds
SURFACES
Thin Films
Lead Sulfide
Sulfur Atom
Lead Oxide
Auger Spectrum
Auger Spectrometry
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Summary:As a result of a complex study of the heterophase photosensitive material CdS-PbS by the methods of scanning electron microscopy and Auger spectrometry, it has been found that the radiation resistance of this material depends on the morphology and phase composition at its surface. It is shown that, as the temperature of annealing is increased, aggregations with predominant content of PbS grow; simultaneously, the composition of these aggregations varies as a consequence of the reaction of substitution of sulfur atoms with oxygen atoms. The latter of the aforementioned processes brings about a decrease in the radiation resistance of the heterophase photosensitive material CdS-PbS, which is accounted for by a decrease in the gettering due to appearance of an intermediate oxidized layer between PbS and CdS. An increase in the sizes and number of spherical aggregations at the surface, which consist of crystallites with predominant content of PbS, brings about an increase in the radiation resistance.
ISSN:1063-7826
1090-6479
DOI:10.1134/S106378261107013X