期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 47, 期 13, 页码 1291-1299出版社
WILEY
DOI: 10.1002/polb.21730
关键词
interfaces; organic devices; resonance reflectivity; thin films; X-ray reflectivity
资金
- U.S. Department of Energy [DE-FG02-98ER45737]
- National Science Foundation [UCSB MRL, DMR-0520415, DMR 0547639, DMR-0704539]
- Office of Science, Department of Energy [DE-AC02-05CH11231]
Resonant soft X-ray reflectivity (RSoXR) has been used to quantify the layer thicknesses and the interfacial widths of a single, complex thin film with three polymeric layers supported on an inorganic substrate. By adjusting the photon energy, the sensitivity to particular interfaces within the trilayer can be selectively enhanced. The results significantly improve and broaden the capabilities of RSoXR, which has previously only been demonstrated and used for bilayers on silicon substrates. The capability of RSoXR to characterize polymer trilayers was not readily predictable from prior bilayer results, as the RSoXR characterization of bilayers benefits from a strong X-ray reflection from the substrate that serves as a reference beam with which the reflections from the other interfaces interfere with. The impact of having the capability to investigate trilayers is exemplified by discussing the utility of RSoXR to characterize organic electronic light emitting multilayers. (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 47: 1291-1299, 2009
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