Artificial photosynthesis is a chemical process that bio mimics the natural process of photosynthesis to convert sunlight, water, and carbon dioxide into carbohydrates and oxygen. Artificial photosynthesis is commonly used to refer to any scheme for capturing and storing the energy from sunlight, the chemical bonds of a fuel (solar fuel). Photocatalytic water splitting converts water into hydrogen and is a major research topic of artificial photosynthesis. Light-driven carbon dioxide reduction is another process studied that replicates natural carbon fixation. Photosynthesis is the process through which plants use the energy of the sun to convert carbon dioxide and water into glucose. Scientists have been trying for years to replicate the process, with the result being electricity rather than glucose. They have made some notable successes, albeit all contained in the lab. Photophosphorylation refers to the use of light energy to ultimately provide the power to cover ADP to ATP, thus replenishing the universal energy currency in living things. In the most straightforward systems in prokaryotes, photosynthesis is used to produce energy and not for the building of any biological molecules. In these systems, there is immediate energy for these cells. This process uses only photosystem I and chlorophyll p700. The book is designed primarily to be a resource for new researchers in Artificial photosynthesis.