The conversion of solar energy to electrical current using thin film third generation photovoltaics (PV) is being widely explored for the last two decades. Organic-inorganic hybrid lead halide or metal halide perovskite photovoltaics presently attract enormous research interest due to their low cost of fabrication and materials and high solar to electric power conversion efficiency (PCE). Over the past ten years the PCE of the perovskite solar cells (PSCs) raises steeply from about 3% to 23.7%; which is unprecedented in the field of photovoltaics . Despite this breakthrough, hybrid lead-halide perovskites are known to degrade due to moisture and heat, upon prolonged exposure to light and are prone to ion or halide vacancy migration, leading to unstable operation of photovoltaic devices. To overcome such difficulties, we oriented our research to inorganic PZN-PT perovskite materials with excellent and stable properties compared to the organic-perovskite ones.