COMPUTER-SIMULATION OF PERCOLATED POROUS SI STRUCTURE AND ITS APPLICATION TO ELECTRICAL-CONDUCTIVITY SIMULATION

The structure of porous silicon (PS) was simulated by a two-dimensiona l site-percolated network model. In this model, both porosity and geom etrical morphology were independently controlled. The conductivity of the generated PS structures were numerically simulated, and the effect s of porosity and geometrical connection of PS on the conduction behav ior of percolated Si network were isolated and identified. It was show n that the geometrical connection of PS causes its conduction behavior to become distinctly different from that in a random network. (C) 199 7 Elsevier Science S.A.