1:00 PM - 1:15 PM
[22p-H103-1] Perfect Separation between Hybrid Orientation CeO2 Regions on SOI Substrates
Keywords:orientation selective epitaxy,hybrid orientation substrates,dielectric thin films
The hybrid orientation structure of the CeO2(100) and (110) regions on Si(100) substrates is studied using electron beam induced orientation selective epitaxial (OSE) growth by reactive magnetron sputtering. Two separate regions of growth are seen, with CeO2(100) layers found to grow in regions irradiated by electrons during the growth process, and the CeO2(110) layers growing in the regions not irradiated by the beam. The lateral orientation mapping reveals the existence of transition regions between these two orientation regions. To make a breakthrough in reduction of the transition region width, we employ the OSE growth on SOI substrates with lithographically formed trenches, which results in perfect separation of the two regions by optimizing the geometry of the trenches.