纳米线超小绒面太阳电池的改进研究

Research of solar cell's optimization with nanometer texture wafer surface

多晶硅太阳电池由于晶向不一致,存在反射率较高的问题,因此,降低多晶硅太阳电池的反射率成为提高多晶硅太阳电池性能的最有效手段之一。利用硝酸银溶液作为腐蚀液,对多晶硅的表面进行处理,使得多晶硅片表面的反射率在可见光波段降低到5%左右,同时探索了利用氮化硅作为保护层,避免腐蚀液对多晶硅片背面造成损伤的方法。最后,对利用此方法制备多晶硅绒面存在的问题进行了分析,并提出了下一步的改进方案。

Multi solar cell has higher surface reflectance because of crystal silicon arrange in distortion, and the method of reducing multi silicon＇s reflectance to improve solar cell＇s performance is widely used in solar industry.Ag NO3 was used as additive to etch multi wafer＇s front surface and Si Nxwas used as protection layer to avoid back surface being etched at the same time and make the reflectance of wafer front surface be reduced to 5% in visible light wavelength. Finally, all the problems of multi wafer texture process were analyzed, and the scheme in next step for optimization was proposed.