Growth temperature dependence of epitaxial Gd2O3 films on Si(111)
This article reports on the epitaxy of crystalline high ? oxide Gd2O3 layers on Si(111) for CMOS gate application. Epitaxial Gd2O3 thin films have been grown by Molecular Beam Epitaxy (MBE) on Si(111) substrates between 650 and 750C. The structural and electrical properties were investigated depending on the growth temperature. The CV measurements reveal that equivalent oxide thickness (EOT) equals 0.7nm for the sample deposited at the optimal temperature of 700C with a relatively low leakage current of 3.610?2A/cm2 at |Vg?VFB|=1V.
gd2o3 crystalline high ? oxide molecular beam epitaxy electrical properties