ابوذر مسعودی
پژوهشگاه مواد و انرژی، کرج، ایران
[ 1 ] - بهینه سازی رشد نانومیله های یکنواختZnO بر روی بستر سیلیکون بذردار به روش رسوب حمام شیمیایی
نانومیله های اکسیدروی به روش رسوب حمام شیمیایی (CBD) روی بستر سیلیکون بذردار به صورت عمودی و یکنواخت رشد داده شدند. از لایه نازک اکسیدروی که به روش کندوپاش بر روی بستر سیلیکونی لایه نشانی شد به عنوان لایه بذر استفاده شد. اثرات دما و زمان رشد بر خواص ساختاری و مورفولوژیکی نانومیله های اکسید روی با استفاده از میکروسکوپ الکترونی روبشی و پراش اشعه ایکس بررسی شد. مطالعات انجام شده نشان داد که است...
[ 2 ] - Investigating the Effect of Ultrasonification Time on Transition from Monolithic Porous Network to Size-Tunable Monodispersed Silica Nanospheres via Stöber Method
Abstract Uniform colloidal monodispersed silica nanoparticles were synthesized via stöber method using ammonia as a basic catalyst. Field Emission Scanning Electron Microscope (FESEM) was confirmed the homogeneous nanospheres. The decrease of TEOS concentration (0.067 to 0.012 mol L-1) and an increase of H2O concentration (3 to 14 mol L-1) at 14 mol L-1 NH3 fixed accelerated the rate of h...
[ 3 ] - Electro-Synthesis of Cu-Nb Nanocomposites; Toward Novel Alloying of Immiscible Bimetals
Immiscible metals due to their inherent specs are insoluble over the steady state. Developing an innovative approach to this issue would be fascinating and challenge the overriding rules. Herein, we proffer the principles of synthesis of Cu-Nb nanocomposites using electrochemical deoxidation route. This method consists of the cathodic electrolysis of the nanoparticles Cu-Nb2O5 through the...
[ 4 ] - Optimization of Chemical Texturing of Silicon Wafers Using Different Concentrations of Sodium Hydroxide in Etching Solution
In this paper, the morphology of chemically etched silicon with various concentration is reported. The surface of Silicon (100) has pyramidal structures which can be used for anti-reflection applications in solar cells. Pyramidal structures can capture incident sun light therefore can enhance the efficiency of silicon solar cells. The structure of silicon pyramid was studied using scanni...
[ 5 ] - Implementation of EIS for dopant profile analysis in n-type silicon
An experimental setup has been developed for successive photo-electrochemical etch and EIS measurement of semiconductor samples. Furthermore an algorithm based on electrochemical capacitance-voltage (ECV) has been developed for calculating dopant profile based on the measurements by developed setup. Phosphorous diffusion profile in p-type silicon was estimated by employing developed setup and a...
[ 6 ] - Nb2O5 Nanoparticles Synthesis by Chemical Surfactant-Free Methods: ltrasonic Assisted Approach
In this study, spherical Nb2O5 nanoparticles were synthesized by a novel chemical method as a simple, robust, surfactant-free, non-toxic and widely applicable approach. In order to investigate the effect of initial concentration on particle sizes, nanoparticles with different initial concentration were synthesized. Ultrasonic assisted method was applied and the effects of ultrasonic treat...
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