کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5437618 | 1398176 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Visible light-emission from Eu-doped ZnAl layered-double hydroxide
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
We report on the evolution of the emission and chemical properties of Eu-doped ZnAl-Layered double hydroxide (LDH) with variation of Eu doping concentration during the hydrothermal growth. With increasing Eu source concentration, the morphologies of the ZnAl-LDHs became denser and more closely packed while maintaining the thickness of each plate. As the Eu source concentration increased to 10Â wt%, specific emission from the doped Eu3+ ions was enhanced in the photoluminescence spectra. However, the peak intensity decreased when the concentration increased further to 20 and 30Â wt%. X-ray photoelectron spectroscopy results showed an abnormal increase of the Eu2+/Eu3+ ratio in the LDHs with increasing Eu source concentration, which suppressed the emission from the Eu3+ electronic transitions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 13, September 2017, Pages 9686-9690
Journal: Ceramics International - Volume 43, Issue 13, September 2017, Pages 9686-9690
نویسندگان
Deok-Ki Cho, Sang-Seok Lee, Ji-Soo Lim, Seong-Ho Baek, Il-Kyu Park,