Nanostructural effects in plasmatically prepared polysilylenes

The photoluminescence of the plasma prepared polysilylenes from corresponding monomers, exemplified by poly[(methyl)phenylsilylene], is examined. For the preparation two quantitatively different plasmas, were used: radio frequency discharge (View the MathML source) and microwave discharge (View the MathML source) in the regime of electron cyclotron resonance. We concentrated on the conditions where the 1D features of the polymers were preserved. Results for both optimised groups of materials exhibit similar results: the excitonic absorption band with maximum at 320–View the MathML source, depending on the conditions of preparation. We explain the observed phenomena by the occurrence of the nanosized 1D Si polymers embedded in 3D covalently bonded Si network.