TY - JOUR
T1 - Tungstate flux-grown Y10W2O21:Eu3+ phosphors with enhanced particle size and luminescence properties
AU - Chien, Tzu Chin
AU - Hwang, Chii Shyang
AU - Nien, Yung Tang
AU - Yoshimura, Masahiro
N1 - Funding Information:
The authors gratefully appreciate the financial support received for this project from the Ministry of Science and Technology, Taiwan (ROC) (grant NSC-97-2221-E-006-011-MY3). The authors would also like to thank the Center for Micro/Nano Science and Technology at National Cheng Kung University for providing technical support.
PY - 2017/8/15
Y1 - 2017/8/15
N2 - Eu0.5Y9.5W2O21 strong red emission phosphors were synthesized via a conventional solid-state reaction method with environmentally friendly tungstate flux (M2WO4, M=Li, Na, K). The growth process of the Eu0.5Y9.5W2O21 phosphors was studied using X-ray diffraction, scanning electron microscopy, and thermogravimetry/differential thermal analysis. The photoluminescence properties, including emission and excitation spectra and thermal stability, were also investigated. The experimental results indicate that the particle size and morphology of the Eu0.5Y9.5W2O21 phosphors depend on the type and content of tungstate flux. The luminescence intensities of the phosphors were effectively enhanced by the tungstate flux. The results also show that the Eu0.5Y9.5W2O21 phosphors are very suitable for use in near-ultraviolet light-emitting diode (LED) chips (392 nm) and blue LED chips (465 nm).
AB - Eu0.5Y9.5W2O21 strong red emission phosphors were synthesized via a conventional solid-state reaction method with environmentally friendly tungstate flux (M2WO4, M=Li, Na, K). The growth process of the Eu0.5Y9.5W2O21 phosphors was studied using X-ray diffraction, scanning electron microscopy, and thermogravimetry/differential thermal analysis. The photoluminescence properties, including emission and excitation spectra and thermal stability, were also investigated. The experimental results indicate that the particle size and morphology of the Eu0.5Y9.5W2O21 phosphors depend on the type and content of tungstate flux. The luminescence intensities of the phosphors were effectively enhanced by the tungstate flux. The results also show that the Eu0.5Y9.5W2O21 phosphors are very suitable for use in near-ultraviolet light-emitting diode (LED) chips (392 nm) and blue LED chips (465 nm).
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U2 - 10.1016/j.ceramint.2017.04.118
DO - 10.1016/j.ceramint.2017.04.118
M3 - Article
AN - SCOPUS:85018649536
VL - 43
SP - 9437
EP - 9442
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 12
ER -