The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved
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2019
Authors
Yan, JingZhang, Ziwang
Milićević, Bojana R.
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Li, Junhao
![](/themes/MirageVinar/images/orcid.png)
Liang, Qiongyun
Zhou, Jianbang
Wang, Yunfeng
Shi, Jianxin
![](/themes/MirageVinar/images/orcid.png)
Wu, Mingmei
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Article (Published version)
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© 2019 Elsevier B.V.
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The local crystal structure engineering becomes an important strategy to design new phosphors with enhanced optical and thermal performance of white light-emitting diodes. Herein, a series of Na3Sc2(PO4)3: Eu2+ and KyNa2.97-ySc2(PO4)3: 0.03Eu2+ phosphors were synthesized via traditional high temperature solid-state reaction method. X-ray powder diffraction analysis and Rietveld refinement provide insight in the detailed crystal structure. Furthermore, Eu2+ doped Na3Sc2(PO4)3 exhibits bright blue emission in 400–540 nm spectral range with a maximum value at ~ 460 nm under n-UV light excitation. The concentration quenching mechanism of Eu2+ in Na3Sc2(PO4)3 is certified to be a dipole-dipole interaction. Additionally, crystal structure tailoring is a potential strategy to design new phosphors for particular applications. Therefore, the effects of K+ substitution on the structure and photoluminescence of Eu2+ activated Na3Sc2(PO4)3 is presented in detail. Rietveld refinement data revealed ...that unit cell volume and Na/K–O band length increase when K+ occupy the Na+ sites. This sensitive local structure resulted in a considerable enhancement of the photoluminescence intensity of Eu2+. Incorporation of K+ in the crystal structure is a feasible route to realize fine-tuning of emission color and broaden the color gamut. In the meantime, Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor exhibits excellent thermal stability at high temperature over a significant radiative recombination of energy transfer from traps to Eu2+. These results confirm that Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor might be used as a blue component in n-UV chip activated white light-emitting diodes for the next-generation of indoor solid-state lighting applications. © 2019 Elsevier B.V.
Keywords:
Cation substitution / Crystal structure / Eu2+ / LED application / Phosphor / PhotoluminescenceSource:
Optical Materials, 2019, 95, 109201-Funding / projects:
- National Natural Science Foundation of China [No. 21801254]
- National Natural Science Foundation of China [No. 51802359]
- National Natural Science Foundation of China [No. U1702254]
- China Postdoctoral Science Foundation [2018M643304]
- Key Research Foundation of the Higher Education Institutions of Henan Province [16A510008]
- Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2017B090917001]
- Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2016B090931007]
- Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2015B090927002]
- Government of Guangzhou city for international joint-project [201704030020]
DOI: 10.1016/j.optmat.2019.109201
ISSN: 0925-3467
WoS: 000497246900005
Scopus: 2-s2.0-85067419255
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VinčaTY - JOUR AU - Yan, Jing AU - Zhang, Ziwang AU - Milićević, Bojana R. AU - Li, Junhao AU - Liang, Qiongyun AU - Zhou, Jianbang AU - Wang, Yunfeng AU - Shi, Jianxin AU - Wu, Mingmei PY - 2019 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8346 AB - The local crystal structure engineering becomes an important strategy to design new phosphors with enhanced optical and thermal performance of white light-emitting diodes. Herein, a series of Na3Sc2(PO4)3: Eu2+ and KyNa2.97-ySc2(PO4)3: 0.03Eu2+ phosphors were synthesized via traditional high temperature solid-state reaction method. X-ray powder diffraction analysis and Rietveld refinement provide insight in the detailed crystal structure. Furthermore, Eu2+ doped Na3Sc2(PO4)3 exhibits bright blue emission in 400–540 nm spectral range with a maximum value at ~ 460 nm under n-UV light excitation. The concentration quenching mechanism of Eu2+ in Na3Sc2(PO4)3 is certified to be a dipole-dipole interaction. Additionally, crystal structure tailoring is a potential strategy to design new phosphors for particular applications. Therefore, the effects of K+ substitution on the structure and photoluminescence of Eu2+ activated Na3Sc2(PO4)3 is presented in detail. Rietveld refinement data revealed that unit cell volume and Na/K–O band length increase when K+ occupy the Na+ sites. This sensitive local structure resulted in a considerable enhancement of the photoluminescence intensity of Eu2+. Incorporation of K+ in the crystal structure is a feasible route to realize fine-tuning of emission color and broaden the color gamut. In the meantime, Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor exhibits excellent thermal stability at high temperature over a significant radiative recombination of energy transfer from traps to Eu2+. These results confirm that Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor might be used as a blue component in n-UV chip activated white light-emitting diodes for the next-generation of indoor solid-state lighting applications. © 2019 Elsevier B.V. T2 - Optical Materials T1 - The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved VL - 95 SP - 109201 DO - 10.1016/j.optmat.2019.109201 ER -
@article{ author = "Yan, Jing and Zhang, Ziwang and Milićević, Bojana R. and Li, Junhao and Liang, Qiongyun and Zhou, Jianbang and Wang, Yunfeng and Shi, Jianxin and Wu, Mingmei", year = "2019", abstract = "The local crystal structure engineering becomes an important strategy to design new phosphors with enhanced optical and thermal performance of white light-emitting diodes. Herein, a series of Na3Sc2(PO4)3: Eu2+ and KyNa2.97-ySc2(PO4)3: 0.03Eu2+ phosphors were synthesized via traditional high temperature solid-state reaction method. X-ray powder diffraction analysis and Rietveld refinement provide insight in the detailed crystal structure. Furthermore, Eu2+ doped Na3Sc2(PO4)3 exhibits bright blue emission in 400–540 nm spectral range with a maximum value at ~ 460 nm under n-UV light excitation. The concentration quenching mechanism of Eu2+ in Na3Sc2(PO4)3 is certified to be a dipole-dipole interaction. Additionally, crystal structure tailoring is a potential strategy to design new phosphors for particular applications. Therefore, the effects of K+ substitution on the structure and photoluminescence of Eu2+ activated Na3Sc2(PO4)3 is presented in detail. Rietveld refinement data revealed that unit cell volume and Na/K–O band length increase when K+ occupy the Na+ sites. This sensitive local structure resulted in a considerable enhancement of the photoluminescence intensity of Eu2+. Incorporation of K+ in the crystal structure is a feasible route to realize fine-tuning of emission color and broaden the color gamut. In the meantime, Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor exhibits excellent thermal stability at high temperature over a significant radiative recombination of energy transfer from traps to Eu2+. These results confirm that Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor might be used as a blue component in n-UV chip activated white light-emitting diodes for the next-generation of indoor solid-state lighting applications. © 2019 Elsevier B.V.", journal = "Optical Materials", title = "The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved", volume = "95", pages = "109201", doi = "10.1016/j.optmat.2019.109201" }
Yan, J., Zhang, Z., Milićević, B. R., Li, J., Liang, Q., Zhou, J., Wang, Y., Shi, J.,& Wu, M.. (2019). The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved. in Optical Materials, 95, 109201. https://doi.org/10.1016/j.optmat.2019.109201
Yan J, Zhang Z, Milićević BR, Li J, Liang Q, Zhou J, Wang Y, Shi J, Wu M. The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved. in Optical Materials. 2019;95:109201. doi:10.1016/j.optmat.2019.109201 .
Yan, Jing, Zhang, Ziwang, Milićević, Bojana R., Li, Junhao, Liang, Qiongyun, Zhou, Jianbang, Wang, Yunfeng, Shi, Jianxin, Wu, Mingmei, "The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved" in Optical Materials, 95 (2019):109201, https://doi.org/10.1016/j.optmat.2019.109201 . .