کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1515204 | 1511507 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical composition of matrix-embedded ternary II-VI nanocrystals derived from first- and second-order Raman spectra
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Chemical composition of matrix-embedded ternary II-VI nanocrystals derived from first- and second-order Raman spectra Chemical composition of matrix-embedded ternary II-VI nanocrystals derived from first- and second-order Raman spectra](/preview/png/1515204.png)
چکیده انگلیسی
A one- and multiphonon Raman scattering study is performed for an extensive set of CdS1-xSex, Cd1-yZnyS, Cd1-yZnySe, and CdSe1-xTex nanocrystals to investigate the applicability of first- and second-order Raman spectra for the determination of the matrix-embedded ternary nanocrystal composition. For one-mode ternary systems both the LO and 2LO phonon frequencies in the Raman spectra are shown to be a good measure of the nanocrystal composition. For two-mode systems, the approaches based on the difference of the LO phonon frequencies (first-order Raman spectra) or double LO overtone and combination tone frequencies (second-order Raman spectra) as well as on the LO phonon band intensity ratios are analysed. The weak electron-phonon coupling in the II-VI nanocrystals and the polaron constant values for the nanocrystal sublattices are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 99, December 2016, Pages 66-74
Journal: Journal of Physics and Chemistry of Solids - Volume 99, December 2016, Pages 66-74
نویسندگان
Yu.M. Azhniuk, Yu.I. Hutych, V.V. Lopushansky, M.V. Prymak, A.V. Gomonnai, D.R.T. Zahn,