The effect of texturing on low-cost polycrystalline silicon solar cells

Polycrystalline silicon wafers were textured by chemical treatments,which include HF-rich HNO3-HF-H2O mixtures,HNO3-rich HNO3-HF-H2O mixtures and 3% alkali treatments. By using SEM,reflectance spectrum and carrier lifetime test,detailed studies of surface morphology,optical properties and carrier lifetime of different etched surfaces were carried out in this paper. Finally the lowcost polycrystalline silicon solar cells were prepared and the effect of texturing on the properties was analyzed. The results show that,the efficiency of the low-cost solar cells with HF-rich HNO3-HF-H2O mixtures treatment is higher than the other two treatments.