کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1545247 | 997589 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of nanodimensional ZnO and Ni-doped ZnO thin films by atom beam sputtering and study of their physical properties
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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: Synthesis of nanodimensional ZnO and Ni-doped ZnO thin films by atom beam sputtering and study of their physical properties Synthesis of nanodimensional ZnO and Ni-doped ZnO thin films by atom beam sputtering and study of their physical properties](/preview/png/1545247.png)
چکیده انگلیسی
We report the preparation of pure zinc oxide (ZnO) and nickel-doped zinc oxide thin films (â¼100 nm) by fast atom beam (FAB) sputtering technique and their characterisation in the perspective of transparent conducting oxide (TCO). Grazing angle X-ray diffraction (GAXRD) reveals that the films are polycrystalline, which has been further confirmed by selected area diffraction (SAD) studies. The nanogranular nature of the films is examined by transmission electron microscopy (TEM). A high optical transmittance (>87%) across UV-vis range and quite low electrical resistivity (â¼1Ã10â3 Ω cm) have been observed in the undoped ZnO films. In Ni-doped ZnO (ZnO:Ni) films the optical transmittance decreases and resistivity increases, which subsequently further affected by an increase in Ni content. Charge carrier concentration, which is the highest in undoped film, reduces after Ni doping. The X-ray photoelectron spectroscopy (XPS) results show that zinc and nickel are in 2+ state. High electrical conductivity of undoped film is explained on the basis of presence of oxygen vacancies deduced from O1s spectra of the films. Decrease of electrical conductivity due to nickel doping is explained on the basis of compensation of oxygen vacancies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 41, Issue 7, June 2009, Pages 1164-1168
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 41, Issue 7, June 2009, Pages 1164-1168
نویسندگان
B. Pandey, S. Ghosh, P. Srivastava, D. Kabiraj, T. Shripati, N.P. Lalla,