A systematic study of synchrotron light induced luminescence from porous silicon: Implications to morphology and chemical effect dependent electronicbehaviour

Using synchrotron as a tunable excitation source, we have carried out a stu dy on the photoluminescence systematics from a series of porous silicon sam ples prepared under different conditions, Luminescence spectra were recorde d with excitation photon energies tuned to the Si L-3,(2) absorption edge ( similar to 100 eV). The luminescence yield was in turn used to monitor the Si L-3,(2)-edge absorption characteristics of porous silicon. A trend of lu minescence wavelength and intensity as a function of preparation conditions emerges. Other related observations are also noted.