کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5426254 | 1395883 | 2007 | 7 صفحه PDF | دانلود رایگان |
Submonolayers of C60 molecules have been deposited on different carbon substrates (pristine HOPG, argon-ion irradiated HOPG and amorphous carbon) and investigated by means of Ultraviolet Photoelectron Spectroscopy. The desorption behavior and spectral changes in the valence band were examined as a function of the sample temperature. Strong fullerene-substrate interaction (chemisorption) was observed on defect-rich surfaces (irradiated HOPG, a-C), indicated by binding energy shifts and broadening of C60 VB features. These chemisorbed species proved to be more resistant against temperature-induced desorption than usually observed for physisorbed molecules on pristine HOPG. The results presented here suggest that deposition of fullerenes on heated substrates might be a feasible method of surface nanostructuring by preferential chemisorption on defects.
Journal: Surface Science - Volume 601, Issue 1, 1 January 2007, Pages 280-286