The application of semiconductors in the energy field is mainly reflected in solar cells, LED lighting, and energy-saving air conditioning. Solar cells utilize the photoelectric effect of semiconductor materials to convert solar energy into electrical energy, providing a key component for the field of renewable energy. LED lighting uses semiconductor materials to emit light, which has the advantages of energy saving, long lifespan, and environmental protection. In addition, in the field of renewable energy, semiconductors have also played an important role in connecting wind and solar power to the grid and reducing transmission losses.