Abstract
We report a new method to form reproducible luminescent porous silicon
layers in p-type and n-type substrates of low and high resisivity, with
minimum apparatus and maximum simplicity. No equipment, formation of
electrical contacts, illumination or addition of surfactants is needed.
The porous silicon layer is formed by exposing the Si surface to the
vapor generated by a dissolution reaction of a metal or Si in a HF/HNO3
mixture. The PL spectra of the layers have peaks located from 1.85 eV to
2.1 eV. The current-voltage characteristics of A1/PS/p-Si/A1 devices
formed on these layers are rectifying and follow an exponential
dependence at low forward bias and a power law at high forward bias. (c)
2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Users
Please
log in to take part in the discussion (add own reviews or comments).