کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5440994 1510371 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Luminescent characteristics of Tm3 +/Tb3 +/Eu3 + tri-doped phosphate transparent glass ceramics for white LEDs
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Luminescent characteristics of Tm3 +/Tb3 +/Eu3 + tri-doped phosphate transparent glass ceramics for white LEDs
چکیده انگلیسی
Tm3 +/Tb3 +/Eu3 + tri-doped transparent glass ceramics (GCs) are obtained via melt-quenching technique and subsequent heating of glass with composition of 20Na2O-42ZnO-28P2O5-9B2O3-1Sb2O3 (mol%). XRD and TEM results demonstrate that orthorhombic NaZnPO4 nanocrystals (NCs) are precipitated among the glass matrix. Under 362 nm excitation, the color tones of GCs change from light blue (0.3134, 0.3477) to warm white (0.3886, 0.3373) by altering concentration of Eu3 +. The energy transfer of Tm3 + → Eu3 + and Tb3 + → Eu3 + is confirmed by photoluminescence spectra and fluorescence decay curves. The results indicate that the as-prepared Tm3 +/Tb3 +/Eu3 + co-doped GCs is a potential matrix material for white light-emitting diodes under UV-LED excitation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 476, 15 November 2017, Pages 100-107
نویسندگان
, , , ,