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
Samo za registrovane korisnike
2018
Autori
Li, XiaohuiZhou, Lei
Dramićanin, Miroslav
Tang, Qiang
Jing, Xiping
Shi, Jianxin
Xu, Yiqin
Wu, Mingmei
Članak u časopisu (Objavljena verzija)
,
© 2018 The Royal Society of Chemistry
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
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.
Izvor:
Journal of Materials Chemistry C, 2018, 6, 46, 12566-12574Finansiranje / projekti:
- National Natural Science Foundation of China (NSFC)-Yunnan Province (U1702254)
- National Natural Science Foundation of China (NSFC)-Yunnan Province (U1301242)
- NSFC (21771195)
- 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 (201604016005)
- Science and Technology Planning Project of Guangzhou City (201704030020)
- postdoctoral fund project (China postdoctoral science foundation) (2017M622848)
- National Natural Science Foundation of China (11375278)
DOI: 10.1039/C8TC04874F
ISSN: 2050-7526; 2050-7534
WoS: 000451761600015
Scopus: 2-s2.0-85057537452
Kolekcije
Institucija/grupa
VinčaTY - 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 . .