کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1663896 | 1517997 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of cobalt doping on ZnO thin films deposited by sol-gel method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of cobalt doping on ZnO thin films deposited by sol-gel method Effect of cobalt doping on ZnO thin films deposited by sol-gel method](/preview/png/1663896.png)
چکیده انگلیسی
This paper reports the effect of cobalt doping on ZnO thin films. Undoped and doped films were deposited on corning glass substrates by sol-gel method with different concentration of cobalt (0-10%). X-ray diffraction patterns show the polycrystalline nature of the films with the preferred orientation along c-axis. No other cobalt metal cluster and impurity phases have been observed with Co doping up to 5%. Raman spectra confirms the substitution of Co ion in place of Zn ion, however the films with Co concentration above 5% show peaks at 490 cmâ 1, 525 cmâ 1 and 715 cmâ 1 which can be attributed to the formation of spinel ZnCo2O4 structure. Surface morphology and topography were studied using field emission scanning electron microscope and atomic force microscopy. The X-ray photoelectron spectroscopy results indicate that the Co ions are in + 2 charge state in the films. The optical transmittance of Co doped ZnO thin films reduces up to 80% as compared to undoped ZnO thin film in the visible region. The bandgap was found to be increasing in the range of 3.26-3.31 eV with Co doping whereas it decreases for higher doping of Co concentration. The M-H and M-T curve confirms the room temperature ferromagnetism in Co doped ZnO thin films.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 612, 1 August 2016, Pages 55-60
Journal: Thin Solid Films - Volume 612, 1 August 2016, Pages 55-60
نویسندگان
Dhruvashi Dhruvashi, P.K. Shishodia,