Preparation of spherical silver particles for solar cell electronic paste with gelatin protection
- 作者：Ao Yiwei ; Yang Yunxia ; Yuan Shuanglong ; Ding Lihua ; Chen Guorong
- 刊名：Materials Chemistry and Physics
- 出版年：2007
- 期刊代码：58_02540584
- 类别：ms
- 出版时间：15 July 2007
- 卷：104
- 期：1
- 页码：158-161
- 文件大小：387 K
摘要
Spherical silver particles used in electronic paste for solar cell were prepared using the chemical reduction method with ammonia as a complex agent, hydrazine hydrate as a reducing agent, and gelatin as a protective agent. The gelatin protective mechanism in the preparing process of spherical silver particles was studied. Observations of SEM and results of laser particle size analysis and ultraviolet absorption spectra demonstrate the formation of the coordinative complex of silver ions with gelatin in aqueous solution which accelerated the reduction of silver ions. Moreover, gelatin can promote the nucleation of the metallic silver particles, thus beneficiating availability of the monodisperse spherical silver particles.