Structural modulation induced intensity enhancement of full color spectra: A case of Ba3ZnTa2-xNbxO9:Eu3+phosphors
Само за регистроване кориснике
2020
Аутори
Li, XiaohuiZhou, Lei
Hong, Junyu
He, Shiman
Jing, Xiping
Dramićanin, Miroslav
Shi, Jianxin
Wu, Mingmei
Чланак у часопису (Објављена верзија)
,
© The Royal Society of Chemistry 2020.
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Modulation of structural order-disorder transition and structural oxygen defects can provide fundamental insights in the optimization of luminescence performances of phosphors. In this study, the luminescence of Ba3ZnTa2O9(BZT) was systematically elucidated, including the emission arising from the charge transfer (Nb5+/Ta5+ O2-) and anti-site oxygen defect emission due to the B-site disordering (defect type: [2ZnNb3-+ 3Vo2+]), as corroborated by the electronic structural calculations and detailed experiments. We present a two-step design for the optimization of luminescence properties of Ba3ZnTa2O9phosphor. In the first step, the B-site equivalent doping (Ta5+substituted by Nb5+) was used to modulate the B-site atomic arrangement, which induced the formation of the cubic phase with B-site full disordering. In the second step, the A-site nonequivalent doping (Ba2+substituted by Eu3+) was used to decrease the oxygen defect concentration. After the two-step optimization, the photoluminesc...ence excitation spectrum of Ba3-yEuyZnNb2O9(y= 0.1) shows a broad band excitation (300-400 nm), which is a good match with the near-UV LED chip emission. Even more importantly, the emission spectrum covers the entire visible spectral region and exhibits a remarkably enhanced emission intensity (a 40 times enhancement when compared to that of the intrinsic BZT). The fabricated LED device comprising an n-UV chip (= 370 nm) and a single-component Ba3-yEuyZnNb2O9(y= 0.1) phosphor coating emits a warm white light with a low correlated color temperature (CCT = 4813 K) and a good color rendering index (Ra= 82.36).
Извор:
Journal of Materials Chemistry C, 2020, 8, 20, 6715-6723Финансирање / пројекти:
- National Natural Science Foundation of China (NSFC) [U1702254]
- National Natural Science Foundation of China (NSFC) [U1801253]
- National Natural Science Foundation of China (NSFC) [U1301242]
- National Natural Science Foundation of China (NSFC) [51902355]
- National Natural Science Foundation of China (NSFC) [21771195]
- National Natural Science Foundation of Guangdong Province [2016A030313305]
- Special Fund of Guangdong Province Project for Applied Science and Technology Research and Development [2017B090917001]
- Special Fund of Guangdong Province Project for Applied Science and Technology Research and Development [2016B090931007]
- Special Fund of Guangdong Province Project for Applied Science and Technology Research and Development [2015B090927002]
- Science and Technology Planning Project of Guangzhou City [201704030020]
- Science and Technology Planning Project of Guangzhou City [201604016005]
- International Postdoctoral Exchange Fellowship Program [20180056]
DOI: 10.1039/D0TC01201G
ISSN: 2050-7526
WoS: 000538108200006
Scopus: 2-s2.0-85085595101
Институција/група
VinčaTY - JOUR AU - Li, Xiaohui AU - Zhou, Lei AU - Hong, Junyu AU - He, Shiman AU - Jing, Xiping AU - Dramićanin, Miroslav AU - Shi, Jianxin AU - Wu, Mingmei PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9016 AB - Modulation of structural order-disorder transition and structural oxygen defects can provide fundamental insights in the optimization of luminescence performances of phosphors. In this study, the luminescence of Ba3ZnTa2O9(BZT) was systematically elucidated, including the emission arising from the charge transfer (Nb5+/Ta5+ O2-) and anti-site oxygen defect emission due to the B-site disordering (defect type: [2ZnNb3-+ 3Vo2+]), as corroborated by the electronic structural calculations and detailed experiments. We present a two-step design for the optimization of luminescence properties of Ba3ZnTa2O9phosphor. In the first step, the B-site equivalent doping (Ta5+substituted by Nb5+) was used to modulate the B-site atomic arrangement, which induced the formation of the cubic phase with B-site full disordering. In the second step, the A-site nonequivalent doping (Ba2+substituted by Eu3+) was used to decrease the oxygen defect concentration. After the two-step optimization, the photoluminescence excitation spectrum of Ba3-yEuyZnNb2O9(y= 0.1) shows a broad band excitation (300-400 nm), which is a good match with the near-UV LED chip emission. Even more importantly, the emission spectrum covers the entire visible spectral region and exhibits a remarkably enhanced emission intensity (a 40 times enhancement when compared to that of the intrinsic BZT). The fabricated LED device comprising an n-UV chip (= 370 nm) and a single-component Ba3-yEuyZnNb2O9(y= 0.1) phosphor coating emits a warm white light with a low correlated color temperature (CCT = 4813 K) and a good color rendering index (Ra= 82.36). T2 - Journal of Materials Chemistry C T1 - Structural modulation induced intensity enhancement of full color spectra: A case of Ba3ZnTa2-xNbxO9:Eu3+phosphors VL - 8 IS - 20 SP - 6715 EP - 6723 DO - 10.1039/D0TC01201G ER -
@article{ author = "Li, Xiaohui and Zhou, Lei and Hong, Junyu and He, Shiman and Jing, Xiping and Dramićanin, Miroslav and Shi, Jianxin and Wu, Mingmei", year = "2020", abstract = "Modulation of structural order-disorder transition and structural oxygen defects can provide fundamental insights in the optimization of luminescence performances of phosphors. In this study, the luminescence of Ba3ZnTa2O9(BZT) was systematically elucidated, including the emission arising from the charge transfer (Nb5+/Ta5+ O2-) and anti-site oxygen defect emission due to the B-site disordering (defect type: [2ZnNb3-+ 3Vo2+]), as corroborated by the electronic structural calculations and detailed experiments. We present a two-step design for the optimization of luminescence properties of Ba3ZnTa2O9phosphor. In the first step, the B-site equivalent doping (Ta5+substituted by Nb5+) was used to modulate the B-site atomic arrangement, which induced the formation of the cubic phase with B-site full disordering. In the second step, the A-site nonequivalent doping (Ba2+substituted by Eu3+) was used to decrease the oxygen defect concentration. After the two-step optimization, the photoluminescence excitation spectrum of Ba3-yEuyZnNb2O9(y= 0.1) shows a broad band excitation (300-400 nm), which is a good match with the near-UV LED chip emission. Even more importantly, the emission spectrum covers the entire visible spectral region and exhibits a remarkably enhanced emission intensity (a 40 times enhancement when compared to that of the intrinsic BZT). The fabricated LED device comprising an n-UV chip (= 370 nm) and a single-component Ba3-yEuyZnNb2O9(y= 0.1) phosphor coating emits a warm white light with a low correlated color temperature (CCT = 4813 K) and a good color rendering index (Ra= 82.36).", journal = "Journal of Materials Chemistry C", title = "Structural modulation induced intensity enhancement of full color spectra: A case of Ba3ZnTa2-xNbxO9:Eu3+phosphors", volume = "8", number = "20", pages = "6715-6723", doi = "10.1039/D0TC01201G" }
Li, X., Zhou, L., Hong, J., He, S., Jing, X., Dramićanin, M., Shi, J.,& Wu, M.. (2020). Structural modulation induced intensity enhancement of full color spectra: A case of Ba3ZnTa2-xNbxO9:Eu3+phosphors. in Journal of Materials Chemistry C, 8(20), 6715-6723. https://doi.org/10.1039/D0TC01201G
Li X, Zhou L, Hong J, He S, Jing X, Dramićanin M, Shi J, Wu M. Structural modulation induced intensity enhancement of full color spectra: A case of Ba3ZnTa2-xNbxO9:Eu3+phosphors. in Journal of Materials Chemistry C. 2020;8(20):6715-6723. doi:10.1039/D0TC01201G .
Li, Xiaohui, Zhou, Lei, Hong, Junyu, He, Shiman, Jing, Xiping, Dramićanin, Miroslav, Shi, Jianxin, Wu, Mingmei, "Structural modulation induced intensity enhancement of full color spectra: A case of Ba3ZnTa2-xNbxO9:Eu3+phosphors" in Journal of Materials Chemistry C, 8, no. 20 (2020):6715-6723, https://doi.org/10.1039/D0TC01201G . .