arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0901.1046cond-mat.mtrl-sci
收藏

Langmuir-Blodgett技术制备钴铂纳米粒子单层膜及其电学性质

Preparation and electrical properties of cobalt-platinum nanoparticle monolayers deposited by the Langmuir-Blodgett technique

Vesna Aleksandrovic, Denis Greshnykh, Igor Randjelovic, Andreas Frömsdorf, Andreas Kornowski, Stephan Volkher Roth, Christian Klinke, Horst Weller

摘要:

利用并优化了Langmuir-Blodgett技术,以在广阔的区域内产生封闭的钴-铂纳米颗粒单层。结果表明,样品制备,“倾角”,和亚相类型有很大的影响所产生的薄膜的质量。纳米颗粒表面配体的量必须最小化,倾角必须在105 $^{\circ}$左右,而乙二醇亚相对于获得纳米颗粒单层是必要的。通过扫描电子显微镜(SEM)和掠入射X射线散射(GISAXS)对所获得的薄膜进行了表征。沉积膜的电性能进行了研究,直流(DC)测量显示的差异,从颗粒金属模型的可变范围跳跃运输,有利于简单的热激活电荷传输。SEM,GISAXS以及直流测量证实了一个狭窄的尺寸分布和高度有序的沉积膜。

英文摘要:

The Langmuir-Blodgett technique was utilized and optimized to produce closed monolayers of cobalt-platinum nanoparticles over vast areas. It is shown that sample preparation, "dipping angle", and subphase type have a strong impact on the quality of the produced films. The amount of ligands on the nanoparticles surface must be minimized, the dipping angle must be around 105$^{\circ}$, while the glycol subphase is necessary to obtain nanoparticle monolayers. The achieved films were characterized by scanning electron microscopy (SEM) and grazing incidence x-ray scattering (GISAXS). The electrical properties of the deposited films were studied by direct current (DC) measurements showing a discrepancy to the variable range hopping transport from the granular metal model, and favoring the simple thermal activated charge transport. SEM, GISAXS as well as DC measurements confirm a narrow size distribution and high ordering of the deposited films.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑