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高长径比银纳米线的制备及其透明导电薄膜性能
赵玮1,赵春宝1,2,沈巽1,张亚南1
1.南京信息职业技术学院,南京 210023;2.南京理工大学软化学与功能材料教育部重点实验室,南京 210094
摘要:
为改善产品长径比,本文在经典多元醇法的基础上,经过常压滴注路线和密闭溶剂热路线分别制备银纳米线。详细讨论了反应时间、反应气氛及反应物投料比等相关参数对银纳米线的产率和长径比的影响。发现密闭溶剂热法在缓解环境污染的同时降低了生长过程中的扰动,所得银纳米线平均直径约55 nm,长度约65 μm,长径比接近1 200。以之制备的透明导电薄膜的方阻仅6 Ω,波长550 nm下透光度为78.6%,品质因数(FOM)高达246,优于常压滴注路线。
关键词:  银纳米线  透明导电薄膜  高长径比  亲水性处理
DOI:10.12044/j.issn.1007-2330.2020.01.008
分类号:TGl46.3+2
基金项目:南京信息职业技术学院自然科学研究副高专项基金(YK20160301);江苏省大学生创新创业训练项目(201913112024Y);江苏省高等学校自然科学研究面上项目(16KJB430034)
Preparation of Silver Nanowires With High Aspect Ratio and the Properties of Transparent Conductive Film
ZHAO Wei1,ZHAO Chunbao1,2,SHEN Xun1,ZHANG Yanan1
1.Nanjing College of Information Technology,Nanjing 210023;2.Key Laboratory of Soft Chemistry and Functional Materials of Education Ministry, Nanjing University of Science &T echnology,Nanjing 210094
Abstract:
Silver nanowires(AgNWs)were prepared by atmospheric drip route and hermetic-solvothermal route respectively to enhance the aspect ratio of classic polyol method products. The effects of reaction time,reaction atmosphere and reactant feed ratio on the yield and aspect ratios of AgNWs were discussed in detail. The AgNWs growth process was more eco-friendly and less disturbances in hermetic-solvothermal route.The AgNWs products show that an average diameter of approach 55 nm and length of about 65 μm and a high aspect ratio of about 1 200. The transparent conductive film fabricated by hermetic-solvothermal AgNWs exhibit sheet resistance of 6 Ω at 78.6% transmission of 550 nm and a factor of merit(FOM) of 246,better than that of atmospheric drip route.
Key words:  Silver nanowires  Transparent conductive film  High aspect ratio  Hydrophilic treatment