کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1537050 996579 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystal structure and photoluminescence properties of Eu2+-activated Ba2LiB5O10 phosphors
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Crystal structure and photoluminescence properties of Eu2+-activated Ba2LiB5O10 phosphors
چکیده انگلیسی

A novel orange-yellow-emitting Ba2LiB5O10:Eu2+ phosphor has been synthesized by traditional high temperature solid state reaction. A monoclinic crystal structure of Barium lithiumborates Ba2LiB5O10 was verified by the investigation of X-ray diffraction (XRD). The compound crystallizes in the space group of P121/m1(11) (Z = 2) with the unit cell parameters a = 4.414(1) Å, b = 14.576(2) Å, c = 6.697(2) Å and β = 104.26(2)°. Barium and lithium atoms are located in distorted octahedral and tetrahedral oxygen coordinations, respectively. Upon around 365 nm excitation, the Eu2+-activated Ba2LiB5O10 phosphors exhibit a single broad emission band with the maximum at about 587 nm, due to the 4f65d → 4f7(8S7/2) transition of Eu2+. This work investigates the relationship between luminescence properties and structural characterization of the Ba2LiB5O10: Eu2+. This newly developed phosphor shows high potential as a phosphor conversion for white LED applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 284, Issue 22, 15 October 2011, Pages 5315–5318
نویسندگان
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