Synthesis of Nanocrystalline mixed/alloyed chalcogenide thin films has been carried out especially for MoBi2Se5 & MoBiInSe5 thin films. While preparing these thin films preparative parameters such as concentration of precursors, pH of solution, temperature of the bath etc. were optimized and characterized. Our aim is to prepare these films for Solar cell applications. This interesting material especially used to develop solid-state photovoltaic devices such as solar display.