کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1665467 | 1518046 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, structure and optical properties of thin films from GeS2-In2S3 system deposited by thermal co-evaporation
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
This paper deals with the properties of the glasses and thin films from multi-component chalcogenide prepared by co-evaporation technique. The thin chalcogenide layers from GeS2-In2S3 system were deposited by thermal co-evaporation of GeS2 and In2S3. Using X-ray microanalysis it was found that the film compositions are closed to the expected ones. X-ray diffraction analysis shows that the thin films deposited by co-evaporation are amorphous. The refractive index, n and the optical band gap, Egopt were calculated from the transmittance and reflectance spectra. The thin film's structure was investigated by infrared spectroscopy. It was found that the photo-induced optical changes decrease with increase of indium content while significant thermo-induced changes in the optical properties and structure were observed at 14 at.% indium. The infrared spectra demonstrated high transmittance of the thin films in the range 4000-500 cmâ 1. The far-infrared spectra indicated that the indium participates in the glass network of the layers from Ge-S-In system in four coordinated InS4/2â tetrahedral and six-coordinated InS6/23 â octahedral units. The changes in infrared spectra after annealing of the thin films evidence an increase of population of ethane-like S3Ge-GeS3 units and/or structural or phase change of indium contain units.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 558, 2 May 2014, Pages 298-305
Journal: Thin Solid Films - Volume 558, 2 May 2014, Pages 298-305
نویسندگان
R. Todorov, K. Petkov, M. Kincl, E. ÄernoÅ¡ková, Mil. VlÄek, L. Tichý,