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An Infrared Spectrophotometric Study of Vitreous Selenium Doped with Selenium Dioxide
Author(s) -
Burley R. A.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680290204
Subject(s) - selenium , infrared , chemistry , oxygen , doping , infrared spectroscopy , molecule , analytical chemistry (journal) , impurity , inorganic chemistry , materials science , environmental chemistry , optics , organic chemistry , optoelectronics , physics
Infrared spectrophotometric studies have shown that selenium dioxide present in vitreous elemental selenium may exist in two distinct forms, depending upon the method of preparation and other factors. Form I exhibits a simple infrared spectrum consisting of two broad bands at 925 and 630 cm −1 . This form has not been described previously in the literature. It is believed to consist of individual molecules of selenium dioxide isolated in the vitreous selenium matrix. Form I gradually changes with time to form II, which exhibits a more complex spectrum, similar to that of crystalline selenium dioxide, and which has been described. The results indicate that the structure of oxygen‐bearing impurities may be as important as the total oxygen content in determining the effect of oxygen on the physical and electrical properties of selenium. The complexity of the form of oxygen present in selenium also renders impractical the accurate determination of trace amounts of oxygen by means of infrared spectrophotometry.