| Autor: |
Scheier, P., Marsen, B., Sattler, K. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 11/1/2003, Vol. 94 Issue 9, p6069, 7p, 3 Black and White Photographs, 3 Graphs |
| Abstrakt: |
The growth of nanometer-sized spherical particles was observed after condensation of pure silicon vapor on a clean graphite surface. Scanning tunneling microscopy (STM) and scanning tunneling spectroscopy were performed on these silicon nanoparticles. The particles are arranged densely packed in perfectly flat layers and exhibit a very narrow size distribution. The tunneling current plotted versus the voltage between the STM tip and the sample (I–V curves) suggests an energy gap of these films of silicon particles of several eV. However, no ultraviolet photoluminescence could be observed in the visible. The particles can be swept from the surface by the scanning tip without reduction of the resolution of the STM. Thus, the coupling of the particles to the graphite can be expected to be weak. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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