کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1496361 992961 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication and optical properties of NUV-emitting SiO2–SrB4O7:Eu2+ glass–ceramic thin films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Fabrication and optical properties of NUV-emitting SiO2–SrB4O7:Eu2+ glass–ceramic thin films
چکیده انگلیسی

SiO2–SrB4O7:Eu2+ glass–ceramic thin films were fabricated for possible application in near ultraviolet (NUV) emitting devices. Nano-sized SrB4O7:Eu2+ powders were prepared by a Pechini-type sol–gel method and a subsequent ball-milling treatment. The powders showed NUV emissions centered at 367 nm, upon irradiation with UV of shorter wavelengths, due to an allowed 4f65d1 → 4f7 electronic transition of Eu2+ ions. The glass–ceramic thin films were prepared by dip-coating of tetraethylorthosilicate (TEOS) solutions dispersed with the nano-sized SrB4O7:Eu2+ powders and a subsequent heat-treatment. It was found that the glass–ceramic thin films had relatively high thermal stability up to 800 °C in terms of the Eu2+ emissions. SiO2 layers surrounding SrB4O7:Eu2+ appeared to be effective for the surface passivation of the phosphor particles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 31, Issue 11, September 2009, Pages 1614–1619
نویسندگان
, ,