硅片表面织构对PERC单晶硅太阳电池电性能影响的研究  

STUDY ON EFFECT OF SURFACE TEXTURE OF SILICON WAFER ON ELECTRICAL PERFORMANCE OF PERC MONO-Si SOLAR CELLS

作　　者：宋爽 勾宪芳 王丽婷 黄国平 姜利凯 曹华斌 Song Shuang;Gou Xianfang;Wang Liting;Huang Guoping;Jiang Likai;Cao Huabin(CECEP Solar Energy Technology Co.,Ltd,Beijing 100083,China;CECEP Solar Energy Technology(Zhenjiang)Co.,Ltd,Zhenjiang 212132,China)

机构地区：[1]中节能太阳能股份有限公司,北京100083 [2]中节能太阳能科技(镇江)有限公司,镇江212132

出　　处：《太阳能》2023年第6期50-58,共9页Solar Energy

摘　　要：通过调整制绒腐蚀液添加剂中表面活性剂和成核剂的添加比例,制备出不同表面织构的硅片,研究了表面活性剂和成核剂的添加比例对硅片表面微观形貌和反射率,以及PERC单晶硅太阳电池电性能的影响规律。结果表明:随着表面活性剂添加比例的增加,腐蚀液对硅片的清洗效果逐渐增强,存在黑斑、麻点及脏污的太阳电池的占比逐渐减少;同时,单晶硅片表面形成的金字塔尺寸(宽度)逐渐减小,比表面积先增大后减小,从而导致太阳电池的光电转换效率呈现先升高再降低的规律;当表面活性剂的添加比例为0.6%时,太阳电池的光电转换效率达到最大值,为22.736%。随着成核剂添加比例的增加,单晶硅片绒面金字塔的均匀性逐渐提升,当成核剂的添加比例大于0.8%时,绒面金字塔的均匀性基本稳定,太阳电池的光电转换效率也达到最大值,为22.784%。This paper prepares silicon wafers with different surface textures by adjusting the proportion of surfactants and nucleating agents added in the velvet corrosion solution additive.The effect of the proportion of surfactants and nucleating agents on the surface micro morphology and reflectivity of silicon wafers,as well as on the electrical performance of PERC mono-Si solar cells are studied.The results show that as the proportion of surfactants added increases,the cleaning effect of the corrosive solution on silicon wafers gradually enhances,and the proportion of solar cells with black spots,pits,and dirt gradually decreases.At the same time,the pyramid size(width)formed on the surface of mono-Si wafers gradually decreases,and the specific surface area first increases and then decreases,resulting in a pattern of first increasing and then decreasing the photoelectric conversion efficiency of solar cells.When the proportion of surfactant added is 0.6%,the photoelectric conversion efficiency of the solar cell reaches its maximum value,which is 22.736%.As the proportion of nucleating agent added increases,the uniformity of the pile pyramid on mono-Si wafers gradually improves.When the proportion of nucleating agent added is greater than 0.8%,the uniformity of the pile pyramid is basically stable,and the photoelectric conversion efficiency of the solar cell also reaches its maximum value,which is 22.784%.

关 键 词：PERC单晶硅太阳电池 表面活性剂 成核剂 绒面金字塔 单晶硅片 电性能 光电转换效率 

分 类 号：TM615[电气工程—电力系统及自动化] TM914.41