Around the Globe, utilization of electrical energy has been increasing substantially and became inevitable source to fulfil the metropolitan human life needs, ever expanding industrialization & corporate companies requirements. In this regard, renewable energy researchers s community has been striving for the best alternatives to reduce the utilization of electrical energy and triggered their research towards electrochromic window technology. Transition metal oxides (TMOs) have been recognized as versatile chromogenic materials in thin film configuration. It is noteworthy that, chromogenic...