Halide perovskites have recently emerged as a promising material for low cost and high efficiency solar cells. Dye Sensitized Solar Cells (DSSCs) are the forerunners of perovskite solar cells. In liquid based dye sensitized solar cell the power conversion efficiency is low and also it had some stability issues. In 2012, a long term stable and high efficiency perovskite solar cell emerged by replacing liquid electrolyte with the solid hole conductor. The attractiveness of organometal halide perovskites are having suitable direct bandgap with large absorption coefficients, low cost and solution based fabrication process. This review summarizes the basic concepts of perovskite, their fabrication and its eminent properties.