S. Labbelavigne et al., FAR-INFRARED DIELECTRIC-CONSTANT OF POROUS SILICON LAYERS MEASURED BYTERAHERTZ TIME-DOMAIN SPECTROSCOPY, Journal of applied physics, 83(11), 1998, pp. 6007-6010
We measure the refractive index and the absorption of porous silicon l
ayers in the millimetric and submillimetric wavelength range using the
terahertz time-domain spectroscopy technique. For the studied range o
f porosity (55%-76%), the refractive index of porous silicon is rather
well described by mixture theories, in which the refractive index of
bulk silicon enters as a main parameter. (C) 1998 American Institute o
f Physics. [S0021-8979(98)07311-3].