  We have carried out first-principles based DFT calculation on electronic
properties of silicene monolayer on various (111) semi-conducting surfaces. We
find that the relative stability and other properties of the silicene overlayer
depends sensitively on whether the interacting top layer of the substrate is
metal or non-metal terminated. The nature of silicene-monolayer on the metal
termi- nated surface can be metallic or even magnetic, depending upon the
choice of the substrate. The silicene overlayer undergoes n-type doping on
metal terminated surface while it undergoes p-type doping on non metal
terminated surfaces of the semiconductor substrates.
