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Title: Optical and transport properties of Se0.7Te0.3 and Se0.3 Te0.7 alloy thin films
Authors: Balasubramaniam, T
Narayandass, Sa K
Mangalaraj, D
Issue Date: Jun-1997
Publisher: NISCAIR-CSIR, India
Abstract: Preparation and the study of optical and transport properties on Se0.7Te0.3 and Se0.3Te0.7in the form of vacuum deposited thin films are undertaken. Material preparation consists of two processes, i.e., (i) preparation of bulk selenium telluride alloys and (ii) fabrication of thin films for characterizing the above mentioned properties. The thicknesses of various films have been measured by multiple beam interference technique. Rutherford Backscattering Spectrometry (RBS) analyses clearly indicate the presence of the parental elements in two different compositions. The XRD studies revealed the polycrystalline nature of the Se0.7Te0.3 and Se0.3Te0.7 thin films. Optical constants in the 500-2500 nm region, band gap and the transition type have been determined from the transmission data. Hall and thermopower measurements are made on these two different compositions and the Hall parameters are calculated.
Page(s): 112-116
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.04(3) [June 1997]

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