کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1492734 992410 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrothermal synthesis and photoluminescence of novel green-emitting phosphor Y1−xBO3:xTb3+
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Hydrothermal synthesis and photoluminescence of novel green-emitting phosphor Y1−xBO3:xTb3+
چکیده انگلیسی

Y1−xBO3:xTb3+ phosphors were first synthesized by hydrothermal reaction, and the samples were characterized by X-ray powder diffractometry, infrared absorption, nuclear magnetic resonance, scanning electron microscopy and photoluminescence. The results show that single phase is obtained with Tb concentration up to 0.28 and all the samples exhibit flake-like morphology. The sample was determined to be vaterite-type orthoborate and the boron is both four-coordinated (chief) and three-coordinated (few). The Y1−xBO3:xTb3+ phosphors showed intense green emission at 550 nm and the intensity of the emission increases with Tb3+ substitution up to 0.22 and then decreases for higher Tb3+ content. In the phosphors prepared by the hydrothermal method the concentration quenching is higher than in the phosphors prepared by solid-state reaction; the intensity of emission is stronger in the former than that of the latter. Y1−xBO3:xTb3+ is a promising phosphor for plasma display panels and hydrargyrum-free lamps.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 41, Issue 8, 10 August 2006, Pages 1571–1577
نویسندگان
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