TY - JOUR
T1 - Adsorption and thermal reaction of C 70 on Si(111)-(7 × 7) and Si(100)-(2 × 1) surfaces
T2 - Comparison with C 60
AU - Wakita, Takanori
AU - Sakamoto, Kazuyuki
AU - Kasuya, Atsuo
AU - Nishina, Yuichiro
AU - Suto, Shozo
N1 - Funding Information:
The authors would like to thank Professor Wakio Uchida for valuable discussions. This work was supported in part by Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture and the Kurata Research Grant.
PY - 1999/4
Y1 - 1999/4
N2 - We report here the measurements of vibrational excitation spectra and the temperature dependence of C 70 molecules adsorbed on Si(111)-(7 × 7) and Si(100)-(2 × 1) surfaces using high-resolution electron-energy-loss spectroscopy. It is found that a strong interaction of the C 70 molecule with the Si(100) surface is induced after annealing at 873 K and that the C 70 cage is easier to decompose on that surface. SiC films are formed at 1273 K and 1073 K on the Si(111)-(7 × 7) and Si(100)-(2 × 1) surfaces, respectively. Moreover, the formation temperature of 1073 K is lower by 50 K than that of the SiC film from C 60 on a Si(100)-(2 × 1) surface. We discuss the reactivity and the formation temperature of SiC films in terms of the interaction of C 70 with the substrates.
AB - We report here the measurements of vibrational excitation spectra and the temperature dependence of C 70 molecules adsorbed on Si(111)-(7 × 7) and Si(100)-(2 × 1) surfaces using high-resolution electron-energy-loss spectroscopy. It is found that a strong interaction of the C 70 molecule with the Si(100) surface is induced after annealing at 873 K and that the C 70 cage is easier to decompose on that surface. SiC films are formed at 1273 K and 1073 K on the Si(111)-(7 × 7) and Si(100)-(2 × 1) surfaces, respectively. Moreover, the formation temperature of 1073 K is lower by 50 K than that of the SiC film from C 60 on a Si(100)-(2 × 1) surface. We discuss the reactivity and the formation temperature of SiC films in terms of the interaction of C 70 with the substrates.
KW - Electron energy loss spectroscopy
KW - Fullerenes
KW - Silicon
KW - Silicon carbide
KW - Vibrations of adsorbed molecules
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U2 - 10.1016/S0169-4332(98)00889-7
DO - 10.1016/S0169-4332(98)00889-7
M3 - Article
AN - SCOPUS:0032630884
SN - 0169-4332
VL - 144-145
SP - 653
EP - 656
JO - Applied Surface Science
JF - Applied Surface Science
ER -