The photovoltaic effect, called photovoltaic effect, refers to the phenomenon where light causes a potential difference between different parts of a non-uniform semiconductor or semiconductor and metal combination. Solar cells are a new type of battery developed. last years. Use of solar cells The principle of photoelectric conversion converts radiant sunlight into semiconductor materials...
The general requirements for solar cell materials are: 1. The band gap of semiconductor material -conductor cannot be too wide. ; ② It must have high photoelectric conversion efficiency: 3. The material itself does not cause pollution to the environment; 4. The material is easy to produce industrially and has stable material performance. Based on the above considerations, silicon is the most ideal solar cell material,which is also the main reason why solar cells are mainly silicon-based materials.