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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Enhancing photoresponsivity of ultra violet photodetectors based on Fe doped ZnO/ZnO shell/core nanorods
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 (0-9 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 (4.5 at.%). The encapsulation increased nanorods diameter by magnitude ∼20-40 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
نویسندگان
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