期刊
MATERIALS RESEARCH EXPRESS
卷 4, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/aa7e08
关键词
silver nanowires; hybrid halides; size control; synthesis kinetics
资金
- National Key Technology Research and Development Program of China [2012BAE06B00]
Silver nanowires (Ag NWs) of different aspect ratios have emerged as promising materials toward manufacturing optoelectronic devices for various applications. We report herein a facile, polyol-based one-pot strategy that has allowed us to synthesize Ag NWs ranging in length from 4-7 to 20-34 mu m and diameter of 49 +/- 10 nm, by simply controlling the concentration of MnCl2 and KBr. The kinetics of Ag+ converted to Ag-0 have been thoroughly investigated, revealing that the introduction of MnCl2 and KBr plays a key role toward the growing of Ag NWs with a high aspect ratio. Cl- and Br- would significantly influence the reaction rate of Ag+ as well as the reaction activation energy, which controls the nucleation, seeding and growth process of Ag NWs. In addition, MnCl2 and KBr promote an efficient conversion of Ag+ and thus, productivity of Ag NWs up to 90% and 70%, respectively. Without further post-treatment, the conductive film made of this Ag NWs on glass had a sheet resistance of 24 Omega/sq and the specular transmittance of it were 92.4%, which proved it is highly potential for optoelectronic applications.
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