晶体硅太阳电池无铅正银电极性能研究  

STUDY OF CHARACTERISTICS FOR LEAD-FREE FRONT-SIDE SILVER ELECTRODES OF CRYSTALLINE SILICON SOLAR CELL

作　　者：王玥[1,2] 付明[1,2] 程思国 范琳 陈栋 

机构地区：[1]华中科技大学光学与电子信息学院,武汉430074 [2]教育部信息功能材料重点实验室(B类),武汉430074 [3]武汉优乐光电科技有限公司,武汉430206

出　　处：《太阳能学报》2017年第8期2145-2150,共6页Acta Energiae Solaris Sinica

基　　金：武汉市科技局应用基础研究项目(2014010101010022)

摘　　要：制备不同Bi_2O_3、TeO_2含量的Bi-Te系无铅玻璃粉,将制备的各组玻璃粉、银粉、有机载体等按相同配方配制正银浆料,通过丝网印刷、烧结工艺制作硅太阳电池正银电极,研究玻璃成分对正银电极性能的影响。通过热重-差热法(TGA-DSC)分析正银浆料在热处理过程中发生的化学反应,首次提出Bi-Te正银浆料在610℃附近发生吸热反应并有失重产生,该反应直接影响银/硅接触面处银微晶的形成。通过扫描电子显微镜(SEM)分析电池烧结后正银栅线和银/硅接触面的微观结构。The Bi-Te lead-free glass powder with different content of Bi203 and TeO2 was prepared. The glass powder, silver powder, organic carrier and so on were used to prepare the front-side silver paste according to the same recipe, then the front-side silver electrodes of silicon solar ceils were fabricated through screen printing and sintering proeesses. The effect of the glass composition on the performance of the front-side silver electrode was studied. Thermogravimetric analysis and differential scanning calorimetry （TGA-DSC） method were used to analyze the chemical reaction happened for front-side silver paste during the thermal treatment process, the Bi-Te front-side silver paste would lose weight and have endothermal reaction around 610℃ were found for the first time, which would directly affects the formation of Ag crystallites at the Ag-Si interface. The Scan Electron Microscopy （SEM） was used to study the microstructures of front- side silver electrodes and Ag-Si contact surface after sintering of the cells.

关 键 词：晶体硅太阳电池 无铅正银电极 Bi-Te系玻璃 银微晶 

分 类 号：TM914.4[电气工程—电力电子与电力传动]