Journal of Crystal Growth, Vol.289, No.1, 37-43, 2006
Effect of template layer on formation of flat-surface beta-FeSi2 epitaxial films on (111) Si by metal-organic chemical vapor deposition
Epitaxial (101)- and/or (110)-beta-FeSi2 films with a continuous, flat surface were successfully grown on (111) Si substrates by metalorganic chemical vapor deposition (MOCVD) using a template layer. Homogeneous grain growth is a key factor in the growth of flat-surface films and was achieved by using a beta-FeSi2 template layer with a high initial nuclear density. Films grown on 50-nm-thick templates maintained a strong (101)- and/or (110)-orientation after MOCVD overgrowth and had a rocking curve full-width at half-maximum (FWHM) of 0.59 degrees. The average roughness was 16 run for 250-nm-thick film grown on a 50-nm-thick template. (c) 2005 Elsevier B.V. All rights reserved.