Eu2+ Site Preferences in the Mixed Cation K2BaCa(PO4)2 and Thermally Stable Luminescence.
Publication type: Journal Article
Publication date: 2018-07-09
scimago Q1
wos Q1
SJR: 5.554
CiteScore: 22.5
Impact factor: 15.6
ISSN: 00027863, 15205126
PubMed ID:
29985612
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
Site preferences of dopant Eu2+ on the locations of K+, Ba2+, and Ca2+ in the mixed cation phosphate K2BaCa(PO4)2 (KBCP) are quantitatively analyzed via a combined experimental and theoretical method to develop a blue-emitting phosphor with thermally stable luminescence. Eu2+ ions are located at K2 (M2) and K3 (M3) sites of KBCP, with the latter occupation relatively more stable than the former, corresponding to emissions at 438 and 465 nm, respectively. KBCP:Eu2+ phosphor exhibits highly thermal stable luminescence even up to 200 °C, which is interpreted as due to a balance between thermal ionization and recombination of Eu2+ 5d excited-state centers with the involvement of electrons trapped at crystal defect levels. Our results can initiate more exploration of activator site engineering in phosphors and therefore allow predictive control of photoluminescence tuning and thermally stable luminescence for emerging applications in white LEDs.
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Total citations:
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Citations from 2025:
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Qiao J. et al. Eu2+ Site Preferences in the Mixed Cation K2BaCa(PO4)2 and Thermally Stable Luminescence. // Journal of the American Chemical Society. 2018. Vol. 140. No. 30. pp. 9730-9736.
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Qiao J., Ning L., Molokeev M. S., Chuang Y., Liu Q. L., Xia Z. Eu2+ Site Preferences in the Mixed Cation K2BaCa(PO4)2 and Thermally Stable Luminescence. // Journal of the American Chemical Society. 2018. Vol. 140. No. 30. pp. 9730-9736.
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TY - JOUR
DO - 10.1021/jacs.8b06021
UR - https://doi.org/10.1021/jacs.8b06021
TI - Eu2+ Site Preferences in the Mixed Cation K2BaCa(PO4)2 and Thermally Stable Luminescence.
T2 - Journal of the American Chemical Society
AU - Qiao, Jianwei
AU - Ning, Lixin
AU - Molokeev, Maxim S.
AU - Chuang, Yu-Liang
AU - Liu, Quan Lin
AU - Xia, Zhiguo
PY - 2018
DA - 2018/07/09
PB - American Chemical Society (ACS)
SP - 9730-9736
IS - 30
VL - 140
PMID - 29985612
SN - 0002-7863
SN - 1520-5126
ER -
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@article{2018_Qiao,
author = {Jianwei Qiao and Lixin Ning and Maxim S. Molokeev and Yu-Liang Chuang and Quan Lin Liu and Zhiguo Xia},
title = {Eu2+ Site Preferences in the Mixed Cation K2BaCa(PO4)2 and Thermally Stable Luminescence.},
journal = {Journal of the American Chemical Society},
year = {2018},
volume = {140},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/jacs.8b06021},
number = {30},
pages = {9730--9736},
doi = {10.1021/jacs.8b06021}
}
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Qiao, Jianwei, et al. “Eu2+ Site Preferences in the Mixed Cation K2BaCa(PO4)2 and Thermally Stable Luminescence..” Journal of the American Chemical Society, vol. 140, no. 30, Jul. 2018, pp. 9730-9736. https://doi.org/10.1021/jacs.8b06021.