Preparation and study of porous Si surfaces obtained using the electrochemical method

Abstract

Abstract. Review of original results concerning electrochemical formation of porous Si layers and investigation of properties inherent to the formed layers has been presented. The results related with observation of changes in pores' morphology depending on the etching conditions, correlation of morphology of the porous layers with their surface composition, photoluminescence and structural characteristics, catalytic activity of porous Si based MIS structures as well as theoretical modeling of the kinetics and mechanisms of the porous Si growth have been described.

Suppression of hot carriers by nanoporous silicon for improved operation of a solar cell

“…The nanoporous silicon layer was shaped using photocatalytic electrochemical anodic process exhaustively described earlier in Ref. [21]. A 1:4 mixture of ethanol and a concentrated (49%) HF acid was used as an electrolyte.…”

3D porous silicon (nanorods array, nanosheets, and nanoclusters) production

“…Plus, its pore sizes and the surface chemistry are controllable [2]. NPS powder can be obtained using several techniques [3][4][5]; as electrochemical [6], vapor phase etching [7] and stain etching of Si-wafers [8]. The production of bulk (PS) in large dimensions shape that is synthesized using ball milling process and pressing, simultaneously, and sintering of Siparticles.…”