TY  - JOUR
AU  - Li, Xiaohui
AU  - Milićević, Bojana R.
AU  - Dramićanin, Miroslav
AU  - Jing, Xiping
AU  - Tang, Qiang
AU  - Shi, Jianxin
AU  - Wu, Mingmei
PY  - 2019
UR  - http://xlink.rsc.org/?DOI=C9TC00159J
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8087
AB  - Single-component white light phosphors with a broad and full color spectrum are urgently required to overcome residual problems with commercial phosphors. In this paper, we describe how Eu3+, as the dopant of Sr3ZnTa2O9 (SZT), plays an important role in structural modulation (including structural order-disorder and intrinsic oxygen defects), as demonstrated by electronic structural calculations and systematic experiments. Furthermore, D-5(0) F-7(2) emission of Eu3+ provides the red component of the emission spectrum and increases the color rendering index of SZT:Eu3+ phosphors. Consequently, the resulting phosphor SZT:10%Eu3+ shows significantly enhanced emission intensity, and its broadband emission covers the entire visible region from 400 nm to 720 nm. A fabricated LED device using a near-ultraviolet 370 nm chip coated with a single-component, the SZT:10%Eu3+ phosphor, shows warm white emission with a high color rendering index (R-a = 82).
T2  - Journal of Materials Chemistry C
T1  - Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement
VL  - 7
IS  - 9
SP  - 2596
EP  - 2603
DO  - 10.1039/C9TC00159J
ER  - 

@article{
author = "Li, Xiaohui and Milićević, Bojana R. and Dramićanin, Miroslav and Jing, Xiping and Tang, Qiang and Shi, Jianxin and Wu, Mingmei",
year = "2019",
abstract = "Single-component white light phosphors with a broad and full color spectrum are urgently required to overcome residual problems with commercial phosphors. In this paper, we describe how Eu3+, as the dopant of Sr3ZnTa2O9 (SZT), plays an important role in structural modulation (including structural order-disorder and intrinsic oxygen defects), as demonstrated by electronic structural calculations and systematic experiments. Furthermore, D-5(0) F-7(2) emission of Eu3+ provides the red component of the emission spectrum and increases the color rendering index of SZT:Eu3+ phosphors. Consequently, the resulting phosphor SZT:10%Eu3+ shows significantly enhanced emission intensity, and its broadband emission covers the entire visible region from 400 nm to 720 nm. A fabricated LED device using a near-ultraviolet 370 nm chip coated with a single-component, the SZT:10%Eu3+ phosphor, shows warm white emission with a high color rendering index (R-a = 82).",
journal = "Journal of Materials Chemistry C",
title = "Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement",
volume = "7",
number = "9",
pages = "2596-2603",
doi = "10.1039/C9TC00159J"
}

Li, X., Milićević, B. R., Dramićanin, M., Jing, X., Tang, Q., Shi, J.,& Wu, M.. (2019). Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement. in Journal of Materials Chemistry C, 7(9), 2596-2603.
https://doi.org/10.1039/C9TC00159J

Li X, Milićević BR, Dramićanin M, Jing X, Tang Q, Shi J, Wu M. Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement. in Journal of Materials Chemistry C. 2019;7(9):2596-2603.
doi:10.1039/C9TC00159J .

Li, Xiaohui, Milićević, Bojana R., Dramićanin, Miroslav, Jing, Xiping, Tang, Qiang, Shi, Jianxin, Wu, Mingmei, "Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement" in Journal of Materials Chemistry C, 7, no. 9 (2019):2596-2603,
https://doi.org/10.1039/C9TC00159J . .

TY  - JOUR
AU  - Li, Xiaohui
AU  - Zhou, Lei
AU  - Dramićanin, Miroslav
AU  - Tang, Qiang
AU  - Jing, Xiping
AU  - Shi, Jianxin
AU  - Xu, Yiqin
AU  - Wu, Mingmei
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7987
AB  - Broad emission with a full and continuous color spectrum realized by crystal engineering is extensively desired to simulate natural sunlight and improve the white color quality. Herein, new insight into the modulation of B site order-disorder and intrinsic oxygen defects for complex perovskite (A(3)BB(2)O(9)) Sr3-xScxZnNb2O9 (0 x 0.1) phosphors is demonstrated for broad-band emission via crystal engineering. We elucidate that the spectrum of Sr3ZnNb2O9 synthesized at an optimal temperature exhibits two emission bands under near-ultraviolet excitation ((ex) = 374 nm) which is readily available from near ultraviolet chips. The two broad emission bands can be ascribed to charge transfer from the empty 4d (t(2g))-orbitals of Nb5+ ions to the filled 2p-orbitals of O2- ions and the intrinsic oxygen defects. Further, as a proposed strategy to optimize the luminescence property of Sr3ZnNb2O9 (SZN), we realized A-site nonequivalent doping to induce B-site disordering and cancel the luminescence quenching which results from B site ordering. The A-site nonequivalent doping efficiently offsets intrinsic oxygen defects, as validated by systematic analyses of experiments and DFT calculations. Consequently, the novel phosphor Sr3-xScxZnNb2O9 (x = 0.1) shows a high color rendering index (R-a = 82.2) and negligible color shift. In addition, its emission intensity is enhanced by approximate to 70 times as compared to the pristine Sr3ZnNb2O9.
T2  - Journal of Materials Chemistry C
T1  - Broad-band emission of A3B′B′′2O9 complex perovskites (A = Ba, Sr; B′ = Zn; B′′ = Ta, Nb) realized by structural variations of the B site order–disorder
VL  - 6
IS  - 46
SP  - 12566
EP  - 12574
DO  - 10.1039/C8TC04874F
ER  - 

@article{
author = "Li, Xiaohui and Zhou, Lei and Dramićanin, Miroslav and Tang, Qiang and Jing, Xiping and Shi, Jianxin and Xu, Yiqin and Wu, Mingmei",
year = "2018",
abstract = "Broad emission with a full and continuous color spectrum realized by crystal engineering is extensively desired to simulate natural sunlight and improve the white color quality. Herein, new insight into the modulation of B site order-disorder and intrinsic oxygen defects for complex perovskite (A(3)BB(2)O(9)) Sr3-xScxZnNb2O9 (0 x 0.1) phosphors is demonstrated for broad-band emission via crystal engineering. We elucidate that the spectrum of Sr3ZnNb2O9 synthesized at an optimal temperature exhibits two emission bands under near-ultraviolet excitation ((ex) = 374 nm) which is readily available from near ultraviolet chips. The two broad emission bands can be ascribed to charge transfer from the empty 4d (t(2g))-orbitals of Nb5+ ions to the filled 2p-orbitals of O2- ions and the intrinsic oxygen defects. Further, as a proposed strategy to optimize the luminescence property of Sr3ZnNb2O9 (SZN), we realized A-site nonequivalent doping to induce B-site disordering and cancel the luminescence quenching which results from B site ordering. The A-site nonequivalent doping efficiently offsets intrinsic oxygen defects, as validated by systematic analyses of experiments and DFT calculations. Consequently, the novel phosphor Sr3-xScxZnNb2O9 (x = 0.1) shows a high color rendering index (R-a = 82.2) and negligible color shift. In addition, its emission intensity is enhanced by approximate to 70 times as compared to the pristine Sr3ZnNb2O9.",
journal = "Journal of Materials Chemistry C",
title = "Broad-band emission of A3B′B′′2O9 complex perovskites (A = Ba, Sr; B′ = Zn; B′′ = Ta, Nb) realized by structural variations of the B site order–disorder",
volume = "6",
number = "46",
pages = "12566-12574",
doi = "10.1039/C8TC04874F"
}

Li, X., Zhou, L., Dramićanin, M., Tang, Q., Jing, X., Shi, J., Xu, Y.,& Wu, M.. (2018). Broad-band emission of A3B′B′′2O9 complex perovskites (A = Ba, Sr; B′ = Zn; B′′ = Ta, Nb) realized by structural variations of the B site order–disorder. in Journal of Materials Chemistry C, 6(46), 12566-12574.
https://doi.org/10.1039/C8TC04874F

Li X, Zhou L, Dramićanin M, Tang Q, Jing X, Shi J, Xu Y, Wu M. Broad-band emission of A3B′B′′2O9 complex perovskites (A = Ba, Sr; B′ = Zn; B′′ = Ta, Nb) realized by structural variations of the B site order–disorder. in Journal of Materials Chemistry C. 2018;6(46):12566-12574.
doi:10.1039/C8TC04874F .

Li, Xiaohui, Zhou, Lei, Dramićanin, Miroslav, Tang, Qiang, Jing, Xiping, Shi, Jianxin, Xu, Yiqin, Wu, Mingmei, "Broad-band emission of A3B′B′′2O9 complex perovskites (A = Ba, Sr; B′ = Zn; B′′ = Ta, Nb) realized by structural variations of the B site order–disorder" in Journal of Materials Chemistry C, 6, no. 46 (2018):12566-12574,
https://doi.org/10.1039/C8TC04874F . .