Rational design of nitrogen and sulfur co-doped carbon dots for efficient photoelectrical conversion applications

A practical strategy is proposed to improve the photoelectrical response performance of carbon dots by taking advantage of the heteroatom co-doping approach, which effectively enhances the light absorption ability and rightly adjusts the energy level of carbon dots. This work demonstrates that the nitrogen and sulfur atom co-doped carbon dots can be used as a good photosensitizer in future high-performance light-harvesting devices.