Laser-induced effects in raman spectra of nanocrystalline silicon

摘要: Investigations into the action of continuous laser radiation with a wavelength 532 nm on particles nanocrystalline silicon (nc-Si) obtained by method pyrolysis monosilane have been carried out for first time using Raman (combination scattering (RS)) spectroscopy. It is established that rather powerful (105–106 W/cm2) causes substantial changes in state nc-Si which are associated development thermooxidative processes air, leading to complex character change RS band belonging nc-Si. The process matrix introduction microparticles low-density polyethylene achieved use SCF impregnation SC-CO2 medium. polymer starts manifesting as at power densities much greater than those case pure powder.