کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8000941 | 1516278 | 2014 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancing photoresponsivity of ultra violet photodetectors based on Fe doped ZnO/ZnO shell/core nanorods
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In this work, the structural, electrical and optical properties of pure and Fe doped ZnO/ZnO shell/core nanorods samples with different Fe concentrations (0-9Â at.%) were studied. The samples were prepared using a two-step method; hydrothermal followed by dip coating for encapsulation process. The X-ray diffraction (XRD) results showed the Fe doping improved the crystallinity of ZnO nanorods at an optimized value (4.5Â at.%). The encapsulation increased nanorods diameter by magnitude â¼20-40Â nm. The structural and optical properties evidenced the Fe ions substituted with valence state 3+ into Zn2+ sites. The I-V measurements showed that resistance was increased with increase in Fe-doping due to increase carrier concentration confirmed existence of Fe ions in valance state 3+. The photoresponsivity of UV photodetectors based Fe doped ZnO nanorods demonstrated an increase trend with Fe doping.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 615, 5 December 2014, Pages 227-233
Journal: Journal of Alloys and Compounds - Volume 615, 5 December 2014, Pages 227-233
نویسندگان
R. Azimirad, A. Khayatian, S. Safa, M. Almasi Kashi,