Porous Silicon Preparation by Electrochemical Etching in Ionic Liquids
نویسندگان
چکیده
منابع مشابه
Fabrication of p-Type Nano-porous Silicon Prepared by Electrochemical Etching Technique in HF-Ethanol and HF-Ethanol-H2O Solutions
Nano-porous silicon were simply prepared from p-type single crystalline silicon wafer by electrochemical etching technique via exerting constant current density in two different HF-Ethanol and HF-Ethanol-H2O solutions. The mesoporous silicon layers were characterized by field emission scanning electron microscopy and scanning electron microscopy. The results demonstrate that the width of nano-p...
متن کاملFabrication of porous silicon-based silicon-on-insulator photonic crystal by electrochemical etching method
We present a fast, novel method for building porous silicon-based silicon-on-insulator photonic crystals in which a periodic modulation of the refractive index is built by alternating different electrochemical etching currents. The morphology and reflectance spectra of the photonic crystals, prepared by the proposed method, are investigated. The scanning electron micrograph and atomic force mic...
متن کاملIn-plane refractive-index anisotropy in porous silicon layers induced by polarized illumination during electrochemical etching
Porous silicon sPSid layers have been anodically etched under polarized illumination, and the degree of linear polarization of their photoluminescence (PL) was measured. The etching conditions were chosen such that the resulting PSi layers were thin enough for interference fringes to appear in their PL spectra. Experimental results show a sinusoidal variation in the degree of linear polarizatio...
متن کاملPhotoluminescence Tuning of Porous Silicon by Electrochemical Etching in Mixed Electrolytes
We have systematically studied the evolution of the photoluminescence(PL) tuning of porous silicon(PS) by electrochemical etching in various mixed electrolytes. The electrolytes employed as an etchants were mixtures of HF:CH3COOH:HNO3:C2H5OH solutions where the composition ratios (%) were varied from 10:1.98:0:88.02 to 10:1.98:8.4:79.62 under constant concentration of HF and CH3COOH with a tota...
متن کاملMorphological and nanostructural features of porous silicon prepared by electrochemical etching
Porous layers were produced on a p-type (100) Si wafer by electrochemical anodic etching. The morphological, nanostructural and optical features of the porous Si were investigated as functions of the etching conditions. As the wafer resistivity was increased from 0.005 to 15 Ω·cm, the etched region exhibited 'sponge', 'mountain' and 'column'-type morphologies. Among them, the sponge-type struct...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ACS Sustainable Chemistry & Engineering
سال: 2020
ISSN: 2168-0485,2168-0485
DOI: 10.1021/acssuschemeng.0c03133