Energy plays a vital role in the development of any country. In the context of energy crisis in recent years, solar energy is one of the prominent renewable energy sources that can play a vital role in the energy sector in the coming future. Although crystalline solar cells have shown high efficiencies, solar cells developed using thin films offer many advantages over the crystalline counter parts. Although the existing polycrystalline thin film solar cells based on CdTe and CuInGaSe2 are giving good efficiencies and are commercially available in the market, however, they involve materials...