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ON THE SYNTHESIS AND CHARACTERIZATION OF POLYCRYSTALLINE GaSb SUITABLE FOR THERMOPHOTOVOLTAIC (TPV) APPLICATIONS

A. Mitric1,* , Th. Duffar1, A. Amariei2, X. Chatzistavrou2, E. Pavlidou2, K. M. Paraskevopoulos2, E. K. Polychroniadis2

Affiliation

  1. EPM-CNRS, ENSHMG, BP695, 38402 St. Martin D’Hères, France
  2. Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

Abstract

For the growth of GaSb crystals, firstly the GaSb feed material must be prepared. An alternative method, based on magnetic induction phenomena, was used to synthesize GaSb feed materials. The advantage of this method is the mixing time, which is much shorter (3h) than for other methods (12h). In order to investigate the efficiency of the technique, GaSb feed material has been prepared and analyzed. This paper presents the results of this GaSb feed material characterization by different techniques. The stoichiometry and homogeneity of the samples were verified by Energy Dispersive Spectroscopy (EDS) and Transmission Electron Microscopy (TEM) and were found to be compositionally homogeneous having a stoichiometry very close to the nominal one. The optical behavior of the samples was studied using Fourier Transform Infrared (FTIR) Spectroscopy. Their optical parameters, calculated by fitting the FTIR reflectivity spectra, present a typical behavior, in accordance with the literature..

Keywords

GaSb, Energy dispersive spectroscopy (EDS), Transmission Electron Microscopy (TEM).

Submitted at: Aug. 18, 2004
Accepted at: March 23, 2005

Citation

A. Mitric, Th. Duffar, A. Amariei, X. Chatzistavrou, E. Pavlidou, K. M. Paraskevopoulos, E. K. Polychroniadis, ON THE SYNTHESIS AND CHARACTERIZATION OF POLYCRYSTALLINE GaSb SUITABLE FOR THERMOPHOTOVOLTAIC (TPV) APPLICATIONS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 2, pp. 659-664 (2005)