کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1619784 1005724 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The alloying effects on the structural and optical properties of nanocrystalline copper zinc oxide thin films fabricated by spin coating and annealing method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
The alloying effects on the structural and optical properties of nanocrystalline copper zinc oxide thin films fabricated by spin coating and annealing method
چکیده انگلیسی

The present paper reports on a systematic study of the influence of Zn alloying on the structural and optical characteristics of CuZnO thin films. Nanocrystalline CuZnO thin films were prepared on p-type Si (1 0 0) substrates by spin coating from a CuO solution mixed with Zn of 0–8.0 at.%. All the prepared samples were annealed in oxygen gas atmosphere at 673 K for 2 h. A detailed characterization of the films doped with zinc was performed by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, ultraviolet–visible (UV–vis) spectroscopy, photoluminescence (PL) spectroscopy, atomic absorption spectroscopy (AAS), and energy dispersive X-ray spectroscopy (EDS). The structural analyses suggest that Zn successfully occupied the Cu sites and did not change the monoclinic structure of CuO. After 4.0 at.% Zn was doped, the crystalline quality and (0 0 2) preferential orientation of the thin film improved. However, when the Zn doping concentration was above 4.0 at.%, the crystalline quality and preferential orientation of the thin film weakened in turn. The XRD and FT-IR results showed single phase CuZnO for the lower (at.% ≤ 6.0) Zn concentration, while a secondary phase of ZnO evolved for 8.0 at.%. The optical band gap, determined from the absorbance spectra, showed a blue shift with increasing Zn content. The works showed that the structural and optical properties of CuO films doped with Zn can be improved and the 4.0 at.% Zn-doped CuO thin films have the best crystallization quality and the strongest emission ability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 502, Issue 2, 23 July 2010, Pages 445–450
نویسندگان
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