کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9808730 1517355 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and photoluminescence of surface N-doped ZnO nanocrystal
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Preparation and photoluminescence of surface N-doped ZnO nanocrystal
چکیده انگلیسی
ZnO nanoparticles doped with nitrogen on surface were prepared by calcinating pure ZnO nanoparticles at 550 and 600 °C in NH3 atmosphere. Uniform N-doped ZnO nanocrystal was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and XPS. A Strong violet photoluminescence (PL) at 400nm was observed at room temperature when excited with 300 nm light, and the emission peak increases with the increase of nitrogen atoms concentration. The violet PL originated from the electron transition from shallow donor levels of oxygen vacancies and doping nitrogen atoms to the top of valence band level.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 59, Issues 2–3, February 2005, Pages 271-275
نویسندگان
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