کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1812965 1025628 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced visible light emission from Co2+ doped ZnS nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Enhanced visible light emission from Co2+ doped ZnS nanoparticles
چکیده انگلیسی

ZnS nanoparticles with Co2+ doping have been prepared at room temperature through a soft chemical route, namely the chemical co-precipitation method. The nanostructures of the prepared nanoparticles have been analyzed using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), selected-area electron diffraction (SAED), and UV-vis spectrophotometer. The sizes of as prepared nanoparticles are found to be in 1–4 nm range. Room-temperature photoluminescence (PL) spectrum of the undoped sample exhibits emission in the blue region with multiple peaks under UV excitation. On the other hand, in the Co2+ doped ZnS samples enhanced visible light emissions with emission intensities of ~35 times larger than that of the undoped sample are observed under the same UV excitation wavelength of 280 nm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 404, Issue 21, 15 November 2009, Pages 3855–3858
نویسندگان
, , , ,