Investigation of Growth Mechanism and Silver Morphology in the PEDOT-PSSA

• Main Authors: Jyun-Hong Liou, 劉峻宏
• Other Authors: 廖文彬
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/70423611275838678174

碩士 === 國立臺灣大學 === 材料科學與工程學研究所 === 101 === In this research, we have utilized the redox property of PEDOT-PSSA to conduct the reducing reaction of silver nitrate, and produced metallic silver. Through modifying the experimental parameters, we have investigated different silver morphologies. First, we have confirmed the distribution and size of PEDOT segments with lowering the conductivity in diluted PEDOT-PSSA. In order to compare the effect on the conductivity with different concentration of PEDOT-PSSA, we reduced silver nitrate to silver in the pristine concentration, and clarified the growth mechanism of silver with in-situ TEM observation. In the end, PEDOT-PSSA reacted with silver nitrate in additional ammonium persulfate (APS) solution. APS decomposed the conjugated structure of PEDOT, lowered the conductivity of PEDOT-PSSA and assisted both the nucleation and growth of the silver reduction simultaneously. Furthermore, APS is the major factor of generating the dendritic silver structure.