光伏银浆配方原料对太阳能电池性能影响综述

A review on photovoltaic sliver paste formulation raw materials on the performance of solar cells

光伏银浆是组建太阳能电池不可或缺的核心部件,其品质的优劣直接影响太阳能电池的性能。如何提升光伏银浆的导电性、抗挠折性、附着力、焊接拉力等一系列性能成为了未来光伏银浆的重要发展方向。现阶段,银浆的原材料一方面要求银粉应具备更好的分散性和粒度均一性,同时也要求树脂具备更好的粘结性以提供方良好的骨架支撑。优异的光伏银浆核心在于配方原料的选择和调配。近年来,银浆配方的更新迭代速度快,周期短,这也对新配方的研发提出了更高的要求。为此,本论文总结了银浆性能影响的三大因素,包括:1)银粉对性能的影响;2)树脂粘接相对性能的影响;3)溶剂对银浆性能的影响等。同时,阐述了当前光伏银浆关键工艺,为研发优化光伏银浆配方提供参考。

Photovoltaic silver paste is an indispensable core component in solar cells,which directly limited the performance of solar cells by its quality.The series of properties improvement including conductivity,flexural resistance,adhesion and welding tension become an important development direction in the future.In this stage,the raw materials silver powder should demonstrate better dispersion and particle size uniformity,as well as the resin should possess better adhesion to provide good skeleton support.The core of excellent silver paste lies in the selection and allocation of formula raw materials.In recent years,the silver paste recipe exhibited short development cycle and renewal rate,which puts forward higher requirements for research.Therefore,this paper summarizes three main factors affecting the performance of silver paste,including:1)the effect of silver powder on the performance;2)influence of resin bonding relative properties;3)the effect of solvent on the performance of silver paste.Meanwhile,the key technology of photovoltaic silver paste is expounded to provide some guidance for developing and optimizing the recipe of photovoltaic silver paste.