Currently, our group is addressing the energy-related issues of the present-day world. Our approach includes designing and developing novel materials followed by the integration of those materials into a functional device structure. Our large portion of research work is dedicated to perovskite structure. It has gained the attention of the scientific community from the very beginning of its discovery in 1839. In particular, the metal halide perovskite semiconductors which include the A-site cation as methylammonium, formamidinium, and Cesium have shown great potential for photovoltaics and beyond photovoltaics applications. Our present focus is to use these promising materials in various applications, including ‘Solar Cells’, ‘Light-Emitting Diodes’, ‘Photodetectors,’ ‘Humidochromic Devices’; ‘Moisture and Ammonia Sensors’, ‘Electrochromic Devices,’ and ‘Nanogenerators’. Moreover, some of our students are also passionate about finding alternatives to coal and petroleum by engineering materials into a device structure for ‘H2O Splitting’, and ‘Zn-Air Batteries’.