A SYNTHESIS PROCESS OF KESTERITE CZTS NANOPOWDER IN AQUEOUS MEDIA BY MICROWAVE IRRADIATION.

摘要

The present invention relates to a process of synthesizing kesterite nanopowder including a compound of the formula: Cu2-aZnbSnc(S/Se)4+d wherein 0=a=1, 0=b=1, 0=c = 1 and -1=d=1, comprising the steps of:-contacting a source of Copper, a source of Zinc a source of Tin, and a source of sulphur and/or selenium in the presence of Ammonium Hydroxide in water; stirring and heating the resultant solution in a microwave below a pressure (in-situ reaction generated), at a temperature, power and length of time sufficient to make the kesterite powders.