Preparation of AgInS2 nanoparticles by a facile microwave heating technique; study of effective parameters, optical and photovoltaic characteristics

► AgInS2 nanoparticles were prepared by a facile microwave heating process. ► The change of reaction conditions led to alter the particle size of the products. ► The uniform thin film of product was provided by screen printing technique. ► The energy conversion efficiency of 1.58% was obtained for optimal product.