| Autor: |
Aleksandrovic, Vesna, Greshnykh, Denis, Randjelovic, Igor, Frömsdorf, Andreas, Kornowski, Andreas, Volkher Roth, Stephan, Klinke, Christian, Weller, Horst |
| Zdroj: |
ACS Nano; June 2008, Vol. 2 Issue: 6 p1123-1130, 8p |
| Abstrakt: |
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 nanoparticle’s surface must be minimized, the dipping angle must be around 105°, 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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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