کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1526174 995367 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sol–gel synthesis and characterization of silica film with two opposite structures: Nano-porous and protuberant
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Sol–gel synthesis and characterization of silica film with two opposite structures: Nano-porous and protuberant
چکیده انگلیسی

Porous silicon films are currently under intense investigation for optical, thermal and electronic applications. In this work, the silica films have been prepared by an acid one-step and acid-base two-step catalytic sol–gel process using a CTAB template. The effects of the catalysis on the structure of films were investigated. The chemical and physical changes during sol–gel process were analysed using DSC-TGA and FTIR. The structure and morphology of films were characterized by XRD and AFM. The experimental results show that the films fabricated from the different catalyzed sols have two opposite structures: nano-porous and protuberant surface. The porous silica film (mean pore size 10 nm) is about 500 nm thick. The height of particles on the protuberant film ranges from a dozen to decades. The discovery of two opposite structures of silica films is a help to development of some films with different application properties dependant on their structures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 114, Issue 1, 15 March 2009, Pages 309–312
نویسندگان
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