Interfacial Growth of Controllable Morphology of Silver Patterns on Plastic Substrates

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• 作者：Guanghui Cui ; Shengli Qi ; Xiaodong Wang ; Guofeng Tian ; Guang Sun ; Wei Liu ; Xiaona Yan ; Dezhen Wu ; Zhanpeng Wu ; Li Zhang
• 刊名：The Journal of Physical Chemistry B
• 出版年：2012
• 出版时间：October 11, 2012
• 年：2012
• 卷：116
• 期：40
• 页码：12349-12356
• 全文大小：595K
• 年卷期：v.116,no.40(October 11, 2012)
• ISSN：1520-5207

文摘

Controllable growth of newly born silver nanoparticles to fractal, cauliflower-like, microscale disks and continuous silver layers with high conductivity and reflectivity on plastic substrates has been developed via solid鈥搇iquid interfacial reduction and growing of ion-doped polymeric films. Such approaches involve polyimide (PI) films as substrates, its corresponding silver-ion-doped precursors as solid oxidants, and facile immersion of ion-doped polymeric films in aqueous reducing solution. The solution reducing process belongs to liquid鈥搒olid interfacial reduction processes, during which silver ions doped in polymeric matrix transformed to newly born silver nanoparticles which further aggregated and migrated along the liquid鈥搒olid interface to form dendrite, cauliflower-like and lamella disk-like architecture and/or severely compact continuous silver nanolayers with highly reflective and conductive properties. Time-dependent morphology evolutions of silver particles were traced by scanning electron microscopy (SEM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). This strategy can also extend to synthesis of many other metals on polymeric films while maintaining outstanding metal鈥損olymer adhesion based on incorporation of various metal ions, and may offer an opportunity to fabricate large scale, high-output, cost-effective processes for metal patterns on flexible polymeric substrates.