Porous silicon
Structural Characteristics of Porous Silicon
... the silicon wafer was found emitting red luminescence when exposed to ultra violet (UV) ...of silicon at grain boundaries and layer of porous silicon has been formed at the surface of ...
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Phosphorus diffusion gettering process of multicrystalline silicon using a sacrificial porous silicon layer
... in silicon, forms oxygen precipitates in the bulk of the wafer rather than at its ...that silicon self-interstitial current gener- ated during phosphorus (P) diffusion is an essential factor of the ...
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Corrosion of Fresh Porous Silicon in Potassium Hydroxide Solution
... Porous silicon samples, composed of PS layer with the same total surface areas of ...and silicon substrate, were fabricated by electrochemical anodization of silicon wafers in a solution of ...
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Investigation of Pd:SnO2/ porous silicon structures for gas sensing
... SEM micrograph of (p-type ) porous silicon etched at 30 minute and current density was (25 mA/cm 2 ) shown in fig. 2. The SEM images show a homogeneous pattern and confirms the formation of uniform ...
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Crystallization of amorphous silicon thin films deposited by PECVD on nickel metalized porous silicon
... thin porous layer with low porosity of about 30% and a higher density of 50 mA/cm 2 to form a deeper layer with high porosity of about ...the porous layer was carried out by simple immersion in diluted ...
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Effect of ZnO Layers on Transport and Relaxation of Charge in Porous Silicon–Silicon Structures
... Porous silicon (PS) is a perfect candidate to serve as a substrate for the deposition of ZnO nanocrystals, since sponge-like geometrical structure of PS allows for ZnO to infiltrate into the substrate with ...
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Thermo-optic Coefficient of Electrochemically Etched Porous Silicon
... Thermo–optic coefficient of electrochemically etched porous silicon was calculated through temperature–dependent reflectance spectroscopy. Refractive index and porosity were measured using Cauchy’s ...
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Nanostructures formed by displacement of porous silicon with copper: from nanoparticles to porous membranes
... discovery, porous silicon (PS) has been attracting a great attention as a breakthrough material with exceptional characteristics for microelec- tronics, integrated optoelectronics, microelectromecha- nical ...
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Effect of thermal annealing on the properties of porous silicon
... The modern interest in porous silicon (PS) was instigated by a seminal publication by Canham on the discovery of room temperature luminescence from PS thin films (L. T. Canham, 1990).This work initiated the ...
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Photoluminescence Properties of LaF3 Coated Porous Silicon
... [6] A. G. Macedo, E. A. De Vasconcelos, R. Valaski, F. Muchenski, E. F. Da Silva Jr., A. F. Da Silva and L. S. Roman, “Enhanced Lifetime in Porous Silicon Light- Emitting Diodes with Fluorine Doped Tin ...
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Characterisation of Macro porous Silicon for Electronic Applications
... Micro-Raman spectroscopy has been applied in the past for the study of stress distribution in layered micro -porous silicon [7-9]. Quite substantial biaxial stress (~ 4- 9 kBar) was found for the layers ...
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Spectroscopic characterization of chemically modified porous silicon
... on silicon surfaces 19,20 , we can see that a very little work has been carried out on the binding of five membered ring to silicon surface 21 ...to porous silicon ...the silicon ...
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Synthesis and Photoluminescence Properties of Porous Silicon Nanowire Arrays
... Several silicon nanostruc- tures, such as porous silicon (PS), silicon nanowires (SiNWs) and silicon nanocrystals, were proposed over the past ...of silicon is still greatly ...
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Nitric oxide releasing porous silicon nanoparticles
... Porous silicon (PSi) is a high surface area, high porosity, biocompatible, and bioresorbable form of silicon widely employed in biomedical applications, including as NPs ...hydrocarbonized ...
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ZnO Films Deposited on Porous Silicon by DC Sputtering
... onto porous silicon by a DC sputtering method and investigated mainly by means of XRD ...of porous sili- con were engaged in this ...on porous silicon formed especially in an ...
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DESIGN AND SIMULATION OF POROUS SILICON BASED GAS SENSOR
... of porous silicon are factors such as the silicon orientation and the etching cell ...and silicon resulted in the alkane group being better ...
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Influence of Disorder on a Chirped Mirror Based on Porous Silicon
... Photonic crystals (PC) [1] are versatile composite structures with an optical index that is periodic on the scale of the wavelength, which offer possibilities for controlling the light propagation. Striking progress has ...
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Electrochemical Fabrication of Porous Silicon Structures for Solar Cells
... In this paper, the electrochemically anodized porous silicon structures have been characterized for various measurements. The experimental procedure of electrochemical anodization has been presented in ...
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Temporal Evolution of Anodization Current of Porous Silicon Samples
... to porous silicon have been used galvanostatic anodization where the current intensity remains constant; however, the potentiostatic anodization which the anodization voltage is constant does not cause ...
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Localization of acoustic modes in periodic porous silicon structures
... Contrasting, porous silicon (PS) multilayer fabrication is relatively easy and considerably less costly, besides that this material allows to modulate both the thicknesses and the elastic properties of each ...
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