Experimental Study of the Nonstoichiometry of Cesium Antimonide approx = Cs sub 3 Sb

Nonstoichiometric approx = Ce sub 3 Sb was synthesized at 200 deg C by a reaction of solid Sb with Cs vapor under controlled pressure. The compositions obtained correspond to atomic ratios 3.04 > Cs/Sb > 2.95. Measurements of the Seebeck coefficient, diffuse reflectance spectra and X-ray studi...

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Published inMaterials chemistry and physics Vol. 24; no. 1-2; pp. 189 - 197
Main Authors Barois, J M, Fouassier, C, Onillon, M, Tanguy, B
Format Journal Article
LanguageEnglish
Published 01.12.1989
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Summary:Nonstoichiometric approx = Ce sub 3 Sb was synthesized at 200 deg C by a reaction of solid Sb with Cs vapor under controlled pressure. The compositions obtained correspond to atomic ratios 3.04 > Cs/Sb > 2.95. Measurements of the Seebeck coefficient, diffuse reflectance spectra and X-ray studies indicate that the predominant defects are singly charged interstial Cs when Cs/Sb > 3 and singly charged interstitial Cs when Cs/Sb < 3; the band gap is close to 1.35 eV in the whole composition range. Graphs. 21 ref.--AA
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0254-0584