کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1668060 1008862 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and luminescence characterization of manganese-activated willemite gel films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Synthesis and luminescence characterization of manganese-activated willemite gel films
چکیده انگلیسی

Manganese-activated willemite (α-Zn2 − xMnxSiO4; x = 0.05–0.20) phosphor thin films with bright green light emission were deposited on silicon wafers by a sol–gel process. Zinc chloride, tetraethylorthosilicate, and manganese chloride were employed as precursors. The sol–gel transition, crystallization process and photoluminescence of processed films were investigated. The level of manganese doping did not greatly affect the crystallinity, but did affect the gelation rate and luminescence of films. X-ray diffraction and infrared spectrum studies revealed that single-phase willemite started to crystallize at around 600 °C. After thermal annealing at 600°–1200 °C, the crystallinity of films increased with increasing heating temperature and thickness of films. The emission intensity of the film was strongly related to the crystallinity and deposition conditions. Controlling the dopant content, number of coating layers and annealing temperature could significantly enhance the brightness of the green emission. The luminescence properties of α-Zn2SiO4:Mn films are characterized by fluorescence spectra and decay lifetime measurements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 520, Issue 3, 30 November 2011, Pages 1027–1033
نویسندگان
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