Investigation about the incorporation of hydrogen into amorphous carbon
作者:
S. Schelz,
P. Kania,
Th. Frauenheim,
U. Stephan,
P. Oelhafen,
期刊:
Journal of Vacuum Science&Technology A: Vacuum, Surfaces, and Films
(AIP Available online 1994)
卷期:
Volume 12,
issue 5
页码: 2820-2824
ISSN:0734-2101
年代: 1994
DOI:10.1116/1.578950
出版商: American Vacuum Society
关键词: CARBON;AMORPHOUS STATE;HYDROGENATION;THIN FILMS;VACUUM EVAPORATION;ION IMPLANTATION;EV RANGE 100−1000;HYDROGEN IONS 1 PLUS;PHOTOELECTRON SPECTROSCOPY;ULTRAVIOLET RADIATION;ELECTRONIC STRUCTURE;C
数据来源: AIP
摘要:
Amorphous carbon and hydrogen containing amorphous carbon films have been prepared by evaporating polycrystalline graphite in hydrogen‐free atmosphere (pH2<10−8mbar) and in the presence of hydrogen at different pressures (3×10−4–1.7×10−2mbar), respectively. After deposition, the films have been characterized byinsituphotoelectron spectroscopy. The composition of the gas phase during graphite evaporation in the presence of hydrogen was measured with a quadrupole mass spectrometer. The gas phase data have been correlated to the hydrogen content in the film. It is found that hydrogen is incorporated preferably into amorphous carbon when already bound to carbon in the form of CHx(x=1,2,3) in the gas phase. In addition, the bombardment of a growing amorphous carbon film with high energy hydrogen ions has turned out to be a quite effective means of incorporating hydrogen intoa‐C.
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