Preparation and Properties of CuAlS2powder and Thin Film
In this research we are looking for suitable materials which may be used as nonlinear optical crystals for infrared applications, and several chalcopyrite semiconductors have been taken into account. Polycrystalline samples of the chalcopyrites CuAIS2, CulnS2 and CulnSe2 were prepared from stoichiometric mixtures of the pure elements by microwave irradiation. The reactions were performed in sealed quartz tubes in as few as 15 minutes. The products were analyzed by x-ray diffraction, EPMA and raman spectra. Thin film were grown by pulsed laser evaporation CuAIS2 powder. From our XRD analysis,the products formed by microwave irradiation were single phase. The consituent analysis shows that the molar ratio of the products was as follows. Cu:AI:S=0.9613:0.9986:2.0401.
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