AVS 62nd International Symposium & Exhibition
    Spectroscopic Ellipsometry Focus Topic Thursday Sessions
       Session EL+AS+BI+EM-ThA

Paper EL+AS+BI+EM-ThA3
Enhanced Temperature Stability of Slanted Columnar Thin Films by ALD Overcoating

Thursday, October 22, 2015, 3:00 pm, Room 112

Session: Optical Characterization of Nanostructures and Metamaterials
Presenter: Alyssa Mock, University of Nebraska - Lincoln
Authors: A. Mock, University of Nebraska - Lincoln
D. Sekora, University of Nebraska - Lincoln
T. Hofmann, University of Nebraska - Lincoln
E. Schubert, University of Nebraska - Lincoln
M. Schubert, University of Nebraska - Lincoln
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The demand for thermally stable nanostructures continues to increase as nanotechnology becomes ever more prevalent in both commercial and research applications. The high surface area of nanostructured thin films is susceptible to degradation under extreme temperatures. Scanning electron microscopy (SEM) and Mueller Matrix Generalized Ellipsometry (MMGE) were used to observe optical and structural properties of a glancing angle deposited cobalt slanted columnar thin film (SCTF) over increased annealing temperature. We show that the use of atomic layer deposition (ALD) to conformally passivate the SCTF surface provides both physical scaffolding and thermal protection during the annealing process up to 475°C as no changes in the SEM or MMGE results were present.