Abstract
Copper antimony sulfide (Cu 3SbS 4) crystals were produced from mixtures of different molar ratios of CuCl, SbCl 3 and thiourea in 40 and 60 ml ethylene glycol (EG) by a 300 W cyclic microwave radiation (CMR) for different lengths of time. In the present research, tetragonal Cu 3SbS 4 microflowers, characterized by X-ray and electron diffraction including electron microscopy and Raman analyses, were successfully produced in the 40 ml solution containing 2:2:4 molar ratio Cu:Sb:S for 40 cycles. Their UV-visible absorption was studied to determine the energy gap (E g). A formation mechanism was also proposed to relate with the experimental results.
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