کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1461670 | 989621 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new route for the synthesis of β-sialon: Eu2+ phosphors using pyrophyllite powders
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Eu2+ ion doped β-sialon (Si6−zAlzOzN8−z:xEu2+) phosphors were prepared from pyrophyllite-based mixtures by a carbothermal reduction and nitridation method first. Then, the effects of z values and the Eu concentration on the structure and the photoluminescence (PL) properties were investigated. β-Sialon was successfully synthesized as a dominant phase even at the low temperature of 1500 °C, while Si3N4 and AlN weakly coexisted as secondary phases. The PL excitation spectra exhibited the broad spectra covering up to 500 nm, and the greenish-yellow emission was observed at around 580 nm. At z=1 and x=0.012, excellent emission intensity could be attained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 39, Supplement 1, May 2013, Pages S349–S353
Journal: Ceramics International - Volume 39, Supplement 1, May 2013, Pages S349–S353
نویسندگان
Kukhyun Jun, Kigang Lee, Gunha Kim, Young Jin Kim,