ENHANCED COHESION OF PHOTO-OXYGENATED FULLERENE FILMS - A NEW OPPORTUNITY FOR LITHOGRAPHY

被引:39
作者
HEBARD, AF
EOM, CB
FLEMING, RM
CHABAL, YJ
MULLER, AJ
GLARUM, SH
PIETSCH, GJ
HADDON, RC
MUJSCE, AM
PACZKOWSKI, MA
KOCHANSKI, GP
机构
[1] AT and T Bell Laboratories, Murray Hill, 07974, NJ
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1993年 / 57卷 / 03期
关键词
D O I
10.1007/BF00332606
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The irradiation of sublimed fullerene (C60 and C70) thin films with ultraviolet light in an oxygen-rich ambient has been found to lead to a substantially increased cohesive energy in the fullerene solid. The decreased solubility and lower vapor pressure of the photo-transformed material enables wet (organic solvents) or dry (thermal or photon-induced sublimation) development of photo-defined negative images. One micrometer wide lines with good edge definition are demonstrated. X-ray, infrared, optical absorption, and high performance liquid chromatography reveal that photo-oxygenated C60 retains its fcc crystal structure but with a substantial fraction of the C60 molecules modified with carbonyl (C=O) bonds.
引用
收藏
页码:299 / 303
页数:5
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