Optical Study of Porous Silicon Layers Produced Electrochemically for Photovoltaic Application

Abstract

In previous years, porous silicon is rapidly attracting increasing interest in various fields and has received a great deal of attention from researchers because of its potential use in a variety of industrial applications such as photovoltaic device applications. The present study conclusively suggested that in order to prepare porous silicon samples, we need to determine the optimal conditions that lead to the increase of the optical efficiency. Porous silicon layers were elaborated by the electrochemical etching method using doped-type ⟨100⟩-oriented silicon substrate. The photoluminescence (PL) and the spectroscopic ellipsometry (SE) measurements were used to calculate the physical and optical parameters (porosity, thickness) (refractive index and extinction coefficient). This study can give a very important interest in the photovoltaic field.

Investigating the Effectiveness of Different Porous Nanoparticles as Drug Carriers for Retaining the Photostability of Pinosylvin Derivative

“…Distinguished from the bottom-up fabrication method of mesoporous silica materials, PSi materials are created through top-down etching and milling techniques. Their distinct optical properties, including the ability to absorb UV-light across various wavelengths due to their unique porous structure, position them as ideal candidates for further exploration as carriers of photolabile drug compounds [ 11 , 12 ]. The surface chemistry of PSi is also easily modifiable, such as through thermal carbonization with acetylene (TCPSi), providing the nanocarrier with high aqueous stability [ 13 ] (contrary to their silica counterparts).…”