The most abundant renewable source of energy on the earth is solar energy, yet its potential has not been exploited efficiently by solar cells present in the market. The affordability of solar energy can be enhanced either by increasing the efficiency of a solar cell or by reducing its cost. In this book, the detailed about behind the perovskite material perovskite solar cell, physics of perovskite solar cell, the introduction of the constituent layer of the perovskite solar cell, the different types of electrode, carrier transport materials, and working of the perovskite solar cells are included.