Enhanced photoluminescence property of porous silicon treated with bismuth (III)

Room temperature NO2 gas sensor based on stain-etched porous silicon: Towards a low-cost gas sensor integrated on silicon

“…In this work, one way of improvement consists of increasing the sensor specific surface which can be achieved by using a porous silicon substrate. Porous silicon (PS), an interesting material with large specific surface area, is easily produced by chemical [6,7] or electrochemical [8] processes. It is indeed a very variable material who's optical, electrical and morphological properties could be modulated by porosity and thickness.…”