Preparation of Rear Side Silver Paste with Slightly Corrosive of Passivation Layer of PERC Solar Cell

• Main Authors: LIAO, CHIH-LUN, 廖志崙
• Other Authors: YANG, WEIN-DUO
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/bpdgxf

碩士 === 國立高雄應用科技大學 === 化學工程與材料工程系碩士在職專班 === 106 === In this study, it can be effectively reduce the damage of the passivation layer of PERC solar cells by add the alumina powder to the conductive silver paste, which is used for back silver electrode of PERC solar cells, so as to helpful to improve the photoelectric conversion efficiency. And by fining the glass powder to obtain the homogeneous reaction and providing a proper sintering property to makes the back silver electrode with good soldering strength. In order to evaluation the corrosive of the silver paste to passivation layer, the two-point probe leakage current measurement method was designed in this study, which was simply and effectively quantify the damage degree of the silver paste to passivation layer. By investigating the effect of different particle size of alumina powder on the corrosive of the silver paste to passivation layer. It was found that the finer of the particle size of alumina powder was good for reduce the corrosive of the silver paste to passivation layer. This is because the larger area of specific surface area of the alumina powder involved in the reaction. In this study, combined with the addition of alumina powder and fining the glass powder, a back silver electrode without damage the passivation layer and has good soldering strength is obtained. By measuring the efficiency of the solar cells made by mass production line is confirmed that the silver paste in this study is able to increase the open circuit voltage by 0.49 % and result the efficiency increased by 0.43 %.