Three Reductions Used in Preparation of the Silver Nano-Particle for Crystalline Silicon Solar Cell and its Characterization

Abstract

Three different chemical reductions are used to synthesize spherical silver particles with different sizes. The results show that the sizes of silver particles by glucose、HCOONH4 and NaBH4 reduction are 49nm, 187nm and 37nm and those silver particles with the size below 100nm by HCOONH4 and NaBH4 reduction have narrow size distributions of 30-70nm. In addition, it has been found that adding a small amount of silver nano-particle can improve the conductivity of that whose size surpasses 100nm which is beneficial to the increase of efficiency of the solar cell when adding it into the silver electronic paste.