کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1525991 1511846 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Shell thickness dependence of luminescence intensity in core/shell ZnS:Mn/ZnS nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Shell thickness dependence of luminescence intensity in core/shell ZnS:Mn/ZnS nanoparticles
چکیده انگلیسی

In the present work, ZnS-coated ZnS:Mn nanoparticles were synthesized and the ZnS shell thickness dependence of Mn emission intensity was investigated. X-ray diffraction (XRD) measurements showed that both the ZnS:Mn nanoparticles and the ZnS shells possessed a zinc blende structure. Transmission electron microscopy (TEM) images and the quantum confinement effect shown in room temperature photoluminescence excitation (PLE) spectra gave the direct evidence that ZnS shells have been successfully coated on the ZnS:Mn nanoparticles. The room temperature photoluminescence (PL) spectra revealed an increase in the Mn emission intensity followed by a steady decline as the ZnS shells thickened. The effect of ZnS shells on the luminescence properties of ZnS:Mn nanoparticles is discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 115, Issues 2–3, 15 June 2009, Pages 795–798
نویسندگان
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