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 . .