Rapid Preparation of CuInS₂ Bulk Polycrystals by Two-Step Microwave Heating Process Using a Domestic Microwave Oven

Abstract

CuInS2 bulk polycrystals have been prepared from stoichiometric mixtures of the elements in rapid time scales using a domestic microwave oven. The growth procedure involves a direct synthetic reaction and a succeeding melt solidification with the assistance of a CuO microwave heater. This leads to the successful preparation of homogeneous and densified CuInS2 crystals having n-type conductivity. The photoluminescence spectra of these crystals at 9 K exhibit sharp emission lines corresponding to free-exciton, bound-exciton and donor-to-valence-band emissions.

Modern Microwave Methods in Solid-State Inorganic Materials Chemistry: From Fundamentals to Manufacturing

“…An example of a direct reaction between elemental powders is the preparation of the ternary sulfide CuInS 2 in a DMO . This reaction requires a total heating time of just 5 min, and reaction to form CuInS 2 is observed to be faster than sublimation of S. Sintering of the resulting CuInS 2 powder is achieved by embedding the reaction tube in a container of CuO, which acts as a susceptor and reaches a temperature above the melting point of CuInS 2 after MW heating is applied for 7–9 min.…”

Optical Properties of the Carbon-Modified TiO2 Prepared by Microwave Carbonization Process

“…1). Several materials such as activation carbon, silicon carbide (SiC), and CuO are known to act as a microwave absorber and exhibit extremely high heating rates under microwave irradiation [23][24][25].…”

In Effect of Reducing Agents in the Preparation and Light Harvesting Properties of CuinS2 Nanoparticles

“…Among these methods, microwave synthesis stands apart as the easiest, for the preparation of nanoparticles. Accordingly many nanoparticles including CuInS2 nanoparticles have been prepared via this method [18][19][20][21]. It has been observed that usage of different pre-cursors result in the formation of various morphological and structural properties for nanoparticles.…”