کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1535124 | 1512616 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescent properties and energy transfer of double-emitting Na2SrMgP2O8:Eu2+, Mn2+ phosphor
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Olgite-type Na2SrMgP2O8 doped with Eu2+ and Mn2+ solely or doubly were prepared by a combustion-assisted synthesis method. The phase formation was confirmed by X-ray powder diffraction measurement. Upon excitation of 352Â nm ultraviolet (UV) light, two intense broad bands have clearly been observed due to the allowed 5d-4f transition of Eu2+ and the forbidden 4T1-6A1 transition of Mn2+, respectively. On the basis of the luminescence spectra and fluorescence decay curves, we confirm that the energy transfer process from the Eu2+ to Mn2+ ions occur in the codoped Na2SrMgP2O8:Eu2+, Mn2+ phosphor. The composition-optimized Na2Sr0.99MgP2O8:0.01Eu2+ and Na2Sr0.99Mg0.9P2O8: 0.01Eu2+, 0.1Mn2+ phosphors exhibits superior external quantum efficiency (87.2% and 69.3%, respectively). Based on the principle of energy transfer, the relative intensities of blue and red emission could be tuned by adjusting the contents of Eu2+ and Mn2+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 307, 15 October 2013, Pages 106-109
Journal: Optics Communications - Volume 307, 15 October 2013, Pages 106-109
نویسندگان
Tang Wanjun, Hu Shanshan, Zhang Fen,