The article discusses various aspects of solar energy materials and photovoltaics, including solar cell theory, latest developments in solar cells, unconventional solar cells, and solar cell design and applications. It also covers topics like spectrally selective surfaces for heating and cooling, advanced optical materials for energy efficiency, and solar thermal storage. The researchers explore new directions in low and high-temperature solar thermal storage, as well as seasonal storage of thermal energy. The goal is to advance the understanding and application of solar energy materials for more efficient and sustainable energy production.