A novel red-emitting Na2Tb0.5(MoO4)(PO4):0.5Eu3+ phosphor was successfully synthesized via high temperature solid-state reaction method to explore new red emissions with high thermal stability and high colour purity. The results indicate that the alternating tetrahedrons of [PO4]3- and [MoO4]2- formed in the three-dimensional structure play a decisive role in isolating Tb3+ and Eu3+ ions. This structural isolation increases the concentration quenching of Tb3+ and Eu3+ in single-doped phosphors by more than 50%. In co-doped phosphors, the energy transfer from Tb3+ to Eu3+ was verified by the overlap of luminescent spectra and variations in decay curves. The emission colour of Na2Y1-x-y(MoO4)(PO4):yTb3+,xEu3+ can be tuned from green to red through the energy transfer process by adjusting the ratio of Tb3+/Eu3+. The emission intensity at 150 °C is 84.7% compared to room temperature, as well as the remarkable correlated colour temperature (2425 K) and high colour purity (95.3%) with CIE ch...romaticity coordinates (0.654, 0.345) make Na2Tb0.5(MoO4)(PO4):0.5Eu3+ as an incredible red-emitting phosphor for both display devices and warm white lighting applications.
Кључне речи:
Colour purity / Energy transfer / Thermal stability / Tunable luminescence / WLEDs
Извор:
Optical Materials, 2019, 97, 109376-
Финансирање / пројекти:
National Natural Science Foundation of China [NSFC No. 21771195]
Joint Funds of NSFC -Yunnan and Guangdong Provinces [No. U1702254 and U1301242]
Natural Science Foundation of Guangdong Province [No. 2016A030313305]
Special Fund of Guangdong Province Project for Applied Science and Technology Research and Development [No. 2016B090931007 and 2017B090917001]
Science and Technology Planning Project of Guangzhou City [No. 201604016005]
TY - JOUR
AU - Guo, Zhenbin
AU - Wu, Zhan-Chao
AU - Milićević, Bojana
AU - Zhou, Lei
AU - Khan, Wasim Ullah
AU - Hong, Junyu
AU - Shi, Jianxin
AU - Wu, Mingmei
PY - 2019
UR - https://vinar.vin.bg.ac.rs/handle/123456789/15174
AB - A novel red-emitting Na2Tb0.5(MoO4)(PO4):0.5Eu3+ phosphor was successfully synthesized via high temperature solid-state reaction method to explore new red emissions with high thermal stability and high colour purity. The results indicate that the alternating tetrahedrons of [PO4]3- and [MoO4]2- formed in the three-dimensional structure play a decisive role in isolating Tb3+ and Eu3+ ions. This structural isolation increases the concentration quenching of Tb3+ and Eu3+ in single-doped phosphors by more than 50%. In co-doped phosphors, the energy transfer from Tb3+ to Eu3+ was verified by the overlap of luminescent spectra and variations in decay curves. The emission colour of Na2Y1-x-y(MoO4)(PO4):yTb3+,xEu3+ can be tuned from green to red through the energy transfer process by adjusting the ratio of Tb3+/Eu3+. The emission intensity at 150 °C is 84.7% compared to room temperature, as well as the remarkable correlated colour temperature (2425 K) and high colour purity (95.3%) with CIE chromaticity coordinates (0.654, 0.345) make Na2Tb0.5(MoO4)(PO4):0.5Eu3+ as an incredible red-emitting phosphor for both display devices and warm white lighting applications.
T2 - Optical Materials
T1 - Na2Tb0.5(MoO4)(PO4):0.5Eu3+: A red-emitting phosphor with both high thermal stability and high colour purity
VL - 97
SP - 109376
DO - 10.1016/j.optmat.2019.109376
ER -
@article{
author = "Guo, Zhenbin and Wu, Zhan-Chao and Milićević, Bojana and Zhou, Lei and Khan, Wasim Ullah and Hong, Junyu and Shi, Jianxin and Wu, Mingmei",
year = "2019",
abstract = "A novel red-emitting Na2Tb0.5(MoO4)(PO4):0.5Eu3+ phosphor was successfully synthesized via high temperature solid-state reaction method to explore new red emissions with high thermal stability and high colour purity. The results indicate that the alternating tetrahedrons of [PO4]3- and [MoO4]2- formed in the three-dimensional structure play a decisive role in isolating Tb3+ and Eu3+ ions. This structural isolation increases the concentration quenching of Tb3+ and Eu3+ in single-doped phosphors by more than 50%. In co-doped phosphors, the energy transfer from Tb3+ to Eu3+ was verified by the overlap of luminescent spectra and variations in decay curves. The emission colour of Na2Y1-x-y(MoO4)(PO4):yTb3+,xEu3+ can be tuned from green to red through the energy transfer process by adjusting the ratio of Tb3+/Eu3+. The emission intensity at 150 °C is 84.7% compared to room temperature, as well as the remarkable correlated colour temperature (2425 K) and high colour purity (95.3%) with CIE chromaticity coordinates (0.654, 0.345) make Na2Tb0.5(MoO4)(PO4):0.5Eu3+ as an incredible red-emitting phosphor for both display devices and warm white lighting applications.",
journal = "Optical Materials",
title = "Na2Tb0.5(MoO4)(PO4):0.5Eu3+: A red-emitting phosphor with both high thermal stability and high colour purity",
volume = "97",
pages = "109376",
doi = "10.1016/j.optmat.2019.109376"
}
Guo, Z., Wu, Z., Milićević, B., Zhou, L., Khan, W. U., Hong, J., Shi, J.,& Wu, M.. (2019). Na2Tb0.5(MoO4)(PO4):0.5Eu3+: A red-emitting phosphor with both high thermal stability and high colour purity. in Optical Materials, 97, 109376.
https://doi.org/10.1016/j.optmat.2019.109376
Guo Z, Wu Z, Milićević B, Zhou L, Khan WU, Hong J, Shi J, Wu M. Na2Tb0.5(MoO4)(PO4):0.5Eu3+: A red-emitting phosphor with both high thermal stability and high colour purity. in Optical Materials. 2019;97:109376.
doi:10.1016/j.optmat.2019.109376 .
Guo, Zhenbin, Wu, Zhan-Chao, Milićević, Bojana, Zhou, Lei, Khan, Wasim Ullah, Hong, Junyu, Shi, Jianxin, Wu, Mingmei, "Na2Tb0.5(MoO4)(PO4):0.5Eu3+: A red-emitting phosphor with both high thermal stability and high colour purity" in Optical Materials, 97 (2019):109376,
https://doi.org/10.1016/j.optmat.2019.109376 . .
