Silicene has, to date, been fabricated on three substrates: silver: zirconium diboride: and iridium – all metallic. Most applications, such as for electronics and photonics, are likely to require a different substrate. Hence, the search is on for other substrates.
A group of India reported on computational studies of silicene on insulating substrates using group II-VI and III-V materials from the periodic table (examples include ZnO and AlN). Potential candidates were identified. A Citadel-Wright State University collaboration, which includes the author as a contributor, has proposed the use of graphene as a substrate. A number of research labs in this country were rumored to be trying this out. One could expect results as early as this year.
April 8, 2013