Callaghan Innovation Research Papers

Back to Research Papers

TitleImaging ellipsometry: Quantitative analysis
Publication TypeJournal Article
Year of Publication2008
AuthorsAsinovski, L., Beaglehole D., and Clarkson M.T.
JournalPhysica Status Solidi (A) Applications and Materials Science
Pagination764 - 771
Date Published2008
ISSN18626300 (ISSN)
KeywordsApplications., Biotechnology, Consistent, Critical reviews, Ellipsometry, Film measurements, Image enhancement, Imaging ellipsometries, Measurement systems, Optical microscopy, Polarized microscopies, Qualitative, Quantitative, Quantitative analyses, Quantitative techniques, Reliable, Semiconductor materials, Semiconductor metrologies, Single points, Spatial resolutions, Surface plasmon resonance, Surface plasmons, Surface topologies
AbstractImaging ellipsometry (IE) combines spatial resolution of optical microscopy with thin-film measurement capabilities of ellipsometry. It has gained significant interest in recent years and is been used for a wide range of applications from biotechnology to semiconductor metrology. Traditionally, IE is used either as a qualitative technique - not unlike polarized microscopy or Surface Plasmon Resonance (SPR) - with "ellipsometry images" showing surface topology variation, or as a quasi-quantitative technique where the change in "ellipsometry images" is used to deduce the change in film thickness. In this paper we give a brief critical review of different measurement systems configurations from the point of view of their fitness to quantitative IE measurement. We discuss the methods of calibration and correction that enable to achieve a truly quantitative IE measurement. We show that a fast and reliable quantitative IE can be practically implemented. It is consistent and can be used in lieu of a classical single point ellipsometry in many applications. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.

Back to top