局部背接触太阳电池背场铝浆研究  

Study on Aluminum Paste of Passivated Emitter and Rear Contact Solar Cells

作　　者：陈瑾 朱鹏[1] 何会子 CHEN Jin;ZHU Peng;HE Huizi(School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China;Nantong T-sun New Energy Co., Ltd., Nantong 226001, China)

机构地区：[1]南通大学化学化工学院,江苏南通226019 [2]南通天盛新能源股份有限公司,江苏南通226001

出　　处：《南通大学学报（自然科学版）》2018年第1期23-27,共5页Journal of Nantong University(Natural Science Edition)　

基　　金：江苏省科技成果转化专项资金项目(BA2017117);江苏省科技厅产学研前瞻性研究项目(BY2016053-09)

摘　　要：为了提高局域背接触太阳电池的电性能,研究了铝粉物性(氧含量、粒径)对局域背接触太阳电池背场铝浆性能的影响,探究了烧结工艺对局域背接触太阳电池填充率、铝背场厚度和电性能的影响.结果表明:低氧含量铝粉和小粒径铝粉活性较高,铝粉和玻璃粉的反应温度较低,铝硅原子间扩散程度较大,可获得较厚的铝背场和较低的填充率;适中的烧结温度能够平衡填充率和铝背场厚度,峰值烧结温度为778.6℃时,填充率达到62.35%,铝背场厚4μm左右,转化效率最高,达到21.16%.To improve the electrical performance of passivated emitter and rear contact（PERC） solar cells, the effect of aluminum powders physical properties（oxygen content, particle size） on the performance of Al paste of PERC solar cells were studied and the influence of firing process on the filling rate, thickness of aluminum back surface field（BSF） and electrical properties of PERC solar cells were investigated. Results showed that the lower oxygen content and smaller particle size of Al powders were more active. Because Al powders react with glass frits at lower temperature and the degree of diffusion between Al and Si atoms is more intense, PERC solar cells can obtain thicker BSF and lower filling rate. Moderate firing temperature can balance the filling rate and BSF. When the peak firing temperature was 778.6 ℃, the filling rate of 62.35%, BSF of 4μm and the maximum conversion efficiency value of 21.16%were obtained.

关 键 词：局域背接触太阳电池 太阳能电池 铝浆 铝背场 电性能 

分 类 号：TM914.4[电气工程—电力电子与电力传动]