The effect of irradiation by 300-keV Ar+ ions on the properties of ele
ctrochemically produced porous silicon is studied at doses of 5 x 10(1
4)-1 x 10(16) cm(-2). Raman scattering and photoluminescence data are
used to show that the radiation hardness of porous silicon layers is s
ubstantially greater than that of single crystal silicon. (C) 1997 Ame
rican Institute of Physics.