کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1495302 992932 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photoluminescence of lanthanide-doped CaSi2O2N2 phosphors and the energy-level diagram of lanthanide ions in CaSi2O2N2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Photoluminescence of lanthanide-doped CaSi2O2N2 phosphors and the energy-level diagram of lanthanide ions in CaSi2O2N2
چکیده انگلیسی

Lanthanide-doped CaSi2O2N2 phosphors were synthesized by solid-state reaction. Their photoluminescence (PL) properties were investigated and analyzed systematically. Energy transitions attributed to electron transfers from 4f to 4f (ff), from 4f to 5d (fd), from 5d to 4f (df) and charge transfer (CT) transition were obtained and classified. Finally, an energy-level diagram of lanthanide-ions in CaSi2O2N2 was proposed. The diagram matches perfectly with the experimental results and explains the luminescence properties of lanthanide-doped CaSi2O2N2 phosphors. The electron-vibrational interaction in 4f–5d optical transitions of CaSi2O2N2:Eu2+ was also studied.


► The PL properties of lanthanide-doped CaSi2O2N2 phosphors were systematically studied.
► CaSi2O2N2:Yb2+(Sm3+) can absorb light from UV to blue and may be used in LED light source.
► An energy-level diagram of lanthanide-ion in CaSi2O2N2 was proposed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 33, Issue 11, September 2011, Pages 1695–1699
نویسندگان
, , , , , ,