کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5005999 | 1461378 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical, vibrational and optical signatures of nitrogen in ZnO nanowires
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Chemical, vibrational and optical signatures of nitrogen in ZnO nanowires Chemical, vibrational and optical signatures of nitrogen in ZnO nanowires](/preview/png/5005999.png)
چکیده انگلیسی
ZnO nanowires with various concentrations of nitrogen molecules have been fabricated by remote plasma annealing. X-ray absorption near-edge spectroscopy (XANES) reveals that nitrogen exists mainly in two chemical states: atomic nitrogen substituting oxygen (NO) and molecular nitrogen (N2) weakly bound to the ZnO lattice; the latter state increases substantially with prolonged plasma time. Cathodoluminescence microanalysis of individual nanowires reveals a broad emission band at 3.24Â eV at 10Â K, attributable to the recombination of a shallow donor and a N2 acceptor state. The Raman modes at 547 and 580Â cmâ1 from the N-doped nanowires are found to rise in proportion to the N2 concentration, indicating they are related to N2 molecules or defects caused by the incorporation of N2 in the nanowires.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science in Semiconductor Processing - Volume 69, October 2017, Pages 57-61
Journal: Materials Science in Semiconductor Processing - Volume 69, October 2017, Pages 57-61
نویسندگان
L. Zhu, S. Khachadorian, A. Hoffmann, M.R. Phillips, C. Ton-That,