کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1646481 1517300 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Infrared photoluminescence of sol–gel spin-coated films of rare-earth activated lanthanum silicate
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Infrared photoluminescence of sol–gel spin-coated films of rare-earth activated lanthanum silicate
چکیده انگلیسی

A series of phosphors with composition La9.33−x−y−zSi6O24O2 (x=Er, y=Ce, z=Yb) with the silicate oxyapatite structure were synthesized by a sol–gel spin-coating technique. The products formed as well-crystallized laminae 6–8 nm thick. Spectroscopic measurements in the near-infrared showed that excitation through Ce3+ enhances 1.53 μm emission of Er3+ by a factor of 50, while the effect of Yb3+ is to quench the luminescence.


► Lanthanum silicate with the oxyapatite structure can be synthesized by a sol–gel spin-coating technique.
► Er3+ activations yield a relatively weak emission at 1.53 μm.
► Ce3+ co-activation increases the infrared emission by about 50 times.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 87, 15 November 2012, Pages 80–83
نویسندگان
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