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Ag树状纳米材料的合成及其等离子共振吸收性质研究

发表时间:2014-05-15  浏览量:1693  下载量:517
全部作者: 陈博婷,董彪
作者单位: 吉林大学电子科学与工程学院,集成光电子学国家重点实验室
摘 要: 利用聚乙烯醇(polyvinyl alcohol, PVA)和AgNO3的混合体系,制备具有树状结构的Ag纳米薄膜。PVA作为模板剂和还原剂,在高压电流的作用下,形成了Ag纳米树状材料,这种材料的定向生长使其在近红外(near infrared, NIR)区域具有较强的等离子共振吸收性质。通过X射线衍射(X-ray diffraction, XRD)光谱,能量分布谱(energy dispersive X-ray, EDX)确定Ag纳米材料的结构。Ag纳米材料的形貌和表面等离子共振吸收性质说明Ag纳米树状材料是NIR吸收的关键因素,扫描电子显微镜(scanning electron microscopy, SEM)的结果说明:控制PVA和AgNO3的比例和旋涂速度可以得到Ag纳米树状材料,进而得到NIR区域(810 nm)的等离子共振吸收性质。
关 键 词: 复合材料;Ag;树状结构;等离子共振
Title: Synthesis and plasma resonance absorption of Ag dendrite nanoparticles
Author: CHEN Boting, DONG Biao
Organization: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Abstract: In this paper, we present a simple synthesis of Ag dendrite structures through a polyvinyl alcohol (PVA)-AgNO3 composite system under high voltage. These materials own good plasmon absorption in near infrared (NIR) region due to the orientated growth of Ag. The structures are confirmed by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) spectrum. The morphology of the Ag particles and the corresponding surface plasma resonance absorption show that the Ag torus is the key role for the NIR absorption. The results of scanning electron microscopy (SEM) detections show that, by controlling the ratio of PVA to AgNO3 and the spin rate, the Ag dendrite can be obtained and the bands of Ag film can be tuned from visible to 810 nm.
Key words: composite material; Ag; dendrite structure; plasma resonance
发表期数: 2014年5月第9期
引用格式: 陈博婷,董彪. Ag树状纳米材料的合成及其等离子共振吸收性质研究[J]. 中国科技论文在线精品论文,2014,7(9):876-880.
 
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