کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5402510 1392735 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical properties and up-conversion of Pr3+ doped CdS nanoparticles in sol-gel glasses
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Optical properties and up-conversion of Pr3+ doped CdS nanoparticles in sol-gel glasses
چکیده انگلیسی
Silica glasses containing Pr3+ with and without CdS nanoparticles were prepared by sol-gel technique. The influence of CdS nanoparticles on Pr3+ doped glass was studied by absorption, photoluminescence and up-conversion. From the measured intensities of various absorption bands of these glasses, the Judd-Ofelt parameters Ω2, Ω4 and Ω6 have been evaluated. The radiative transition probability (A), radiative lifetime (τR), branching ratio (βR) and integrated emission cross-section (σP) were calculated from excited states of 3P1 and 3P0 levels. The up-conversion emissions were found in the green, orange and red regions under 800 nm excitation with peaks 559, 612 and 688 nm respectively. On excitation with 370 nm also leads to similar green, orange and red regions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 130, Issue 10, October 2010, Pages 1857-1862
نویسندگان
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