核壳结构银纳米线的合成及神经形态网络特性  

Synthesis and neuromorphic network properties of core-shell silver nanowires

作　　者：赵玮[1,2] 赵春宝[1,3] 张君[1] 汪莎莎 解令海 ZHAO Wei;ZHAO Chun-bao;ZHANG Jun;WANG Sha-sha;XIE Ling-hai(School of Electronic Information,Nanjing Vocational College of Information Technology,Nanjing 210023,China;State Key Laboratory of Organic Electronics and Information Displays,Nanjing University of Posts&Telecommunications,Nanjing 210023,China;Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京信息职业技术学院电子信息学院,南京210023 [2]南京邮电大学有机电子与信息显示国家重点实验室,南京210023 [3]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

出　　处：《贵金属》2022年第1期10-15,21,共7页Precious Metals

基　　金：南京信息职业技术学院高层次人才科研启动基金(YB20212001);江苏省基础研究计划自然科学基金面上项目(BK20211370);软化学与功能材料教育部重点实验开发基金(30916014103);江苏省产学研合作项目(BY2020395);国家自然科学基金青年科学基金(61604081);江苏省“六大人才高峰”创新人才团队(XCL-CXTD-009);江苏省高等学校自然科学研究面上项目(16KJB430034);江苏省大学生创新创业训练项目(201913112024Y)。

摘　　要：银纳米线由于具有独特的核壳结构,被用于构建神经形态纳米线网络。以经典多元醇法为模板,设计正交实验合成了一系列核壳结构银纳米线,分析了反应温度、聚乙烯吡咯烷酮(PVP)的相对分子量、PVP用量和卤离子含量等因素对银纳米线长度、直径及核壳结构微观特征的具体影响。结果表明,相对分子质量高的PVP更适合制备具有AgNWs-Ag核壳结构的银纳米线;由银纳米线组成的神经形态纳米线网络表现出类似人工突触行为的忆阻响应曲线,其神经形态特性受银纳米线核壳结构微观特征影响,并表现出明显的湿度依赖特性。Silver nanowires(AgNWs)have been used to build neuromorphic nanowire networks(NNWNs)due to their unique core-shell structure.In this paper,a series of core-shell silver nanowires were synthesized by designing orthogonal experiments using the classical polyol as a template.The specific effects of the reaction temperature,the relative molecular weight of polyvinylpyrrolidone(PVP),the amount of PVP and the content of halide ions on the length,diameter and microscopic characteristics of the core-shell structure of silver nanowires were investigated.The results showed that PVP with higher relative molecular weight is more suitable to prepare AgNWs-Ag with core-shell structure.Neuromorphic nanowire networks composed of silver nanowires exhibit memristive response curves similar to artificial synapses,and their neuromorphic properties depends on the microscopic features of the core-shell structures of silver nanowires and environmental humidity.

关 键 词：核壳结构 银纳米线 多元醇法 正交实验 神经形态 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ133.51[化学工程—无机化工]