Kl. Narasimhan, TRANSPORT IN CRYSTALLINE SILICON-POROUS SILICON JUNCTIONS, Philosophical magazine. B. Physics of condensed matter.Statistical mechanics, electronic, optical and magnetic, 77(1), 1998, pp. 75-84
In this paper, we have investigated the current-voltage (I-V) characte
ristics of crystalline Si (c-Si)/porous Si/metal structures for differ
ent substrate resistivities from 0.01 to 75 Omega cm. We find that the
I-V characteristics for low-resistivity samples are nonlinear and pse
udosymmetric. For samples with a substrate resistivity greater than 1
Omega cm, the I-V characteristics exhibit rectifying behaviour. The I-
V characteristics of the latter samples are weakly dependent on temper
ature. We present a model which invokes tunnelling to explain electron
ic transport in this system.