Metal overlayers on self-organized molecular assemblies. IV. Ion scattering spectroscopy of the Ag/CH[sub 3] interface
- National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)
Ion scattering spectroscopy (ISS) of vacuum deposited Ag on octadecanethiol (ODT, HS(CH[sub 2])[sub 17]CH[sub 3]) organized molecular assemblies (OMAs) provides a means of studying interfacial structure at metal/organic interfaces under controlled conditions. The OMAs were self-assembled onto gold films on silicon [l angle]100[r angle] substrates. ISS compositional depth profiles of the Ag/CH[sub 3] interface were performed at a number of temperatures between 113 and 293 K. Results from these experiments show clearly that Ag penetrates rapidly through ODT above [similar to]200 K. The changes in ISS Ag peak intensities as a function of time and temperature provide evidence for the formation of Ag clusters at the ODT/Au interface after penetration of Ag. Changes in deposition rate between 0.003 and 0.015 nm/s yielded little difference in corresponding ISS depth profiles. Over a range of ion beam current densities from 0.06 to 2.0 [mu]A/cm[sup 2], scaled compositional depth profiles were found to be comparable within experimental error.
- DOE Contract Number:
- AC36-83CH10093
- OSTI ID:
- 7028243
- Journal Information:
- Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States) Vol. 12:4; ISSN 0734-2101; ISSN JVTAD6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360606* -- Other Materials-- Physical Properties-- (1992-)
CHEMICAL ANALYSIS
CHEMICAL BONDS
CHEMICAL COMPOSITION
ELEMENTS
INTERFACES
ION SCATTERING ANALYSIS
METALS
NONDESTRUCTIVE ANALYSIS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
SILVER
SOLID CLUSTERS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENTS