Quantum Dot Photovoltaics examines various aspects of next-gen photovoltaics to have a deeper understanding of colloidal quantum confined semi-conductor nanostructures. It includes the meaning of quantum dot photovoltaics and fabrication protocols required for such solar cells. Provide the reader with the insights into the development of solar energy conversion and the current status of colloidal quantum dots in prototype solar cells, so as to understand the scientific challenges faced during the conversion of solar energy.