Poly compound thin film solar cell

Cadmium sulfide, cadmium telluride polycrystalline thin film battery is less efficient than amorphous silicon thin film solar cells, low cost is lower than that of single crystal silicon battery, and is also easy to produce, but because of cadmium, there is a poisonous, Severe pollution is caused to the environment, so it is not the most ideal alternative product of crystalline silicon solar cells.

GaAS (GaAs) III-V compound battery can reach 28%, GaAS compound material has a very ideal optical band gap and a higher absorption efficiency, strong anti-irradiation ability, Heat is not sensitive, suitable for manufacturing high efficiency single knot batteries. However, the price of the GaAs material is a lot, and it is largely limited to the popularity of GaAs batteries.

Copper Indium thin film battery (CIS) is suitable for photoelectric conversion, and there is no photoreactive problem, conversion efficiency, and polysilicon. It has the advantages of low price, good performance and simple process, will become an important direction to develop solar cells in the future. The only problem is the source of the material. Because indium and selenium are more rare elements, the development of such batteries is inevitable.