Perovskite as Light Harvester: Prospects, Efficiency, Pitfalls and Roadmap

In the recent years, perovskite materials have attracted great attention due to their excel‐ lent light‐harvesting properties. The organic materials of these hybrid inorganic organic light harvesters are used as sensitizers and the inorganic materials have been used as light absorbers. The exceptional properties of these materials such as long diffusion length, high carrier mobility, affordable device fabrication, and adjustable adsorption range have created a new era in optoelectronic technologies. The perovskites have become promis‐ ing materials due of their versatility in device architecture, flexibility in material growth, and ability to achieve the high efficiency through various processing techniques. The superior performance of silicon‐based tandems by achieving efficiency more than 40% has encouraged researchers to further expand the investigations to higher levels. The quest to transit the research curiosity to the market photovoltaic technology has given a new dimension to the remarkable ascension of perovskite solar cells. This chapter intro‐ duces the experimental and theoretical aspects, the electrical and optical properties, pit‐ falls, and a roadmap for the future prospects of perovskite materials.