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The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved
dc.creator | Yan, Jing | |
dc.creator | Zhang, Ziwang | |
dc.creator | Milićević, Bojana R. | |
dc.creator | Li, Junhao | |
dc.creator | Liang, Qiongyun | |
dc.creator | Zhou, Jianbang | |
dc.creator | Wang, Yunfeng | |
dc.creator | Shi, Jianxin | |
dc.creator | Wu, Mingmei | |
dc.date.accessioned | 2019-11-13T11:31:38Z | |
dc.date.available | 2019-11-13T11:31:38Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 0925-3467 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/8346 | |
dc.description.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. | en |
dc.language.iso | en | |
dc.relation | National Natural Science Foundation of China [No. 21801254] | |
dc.relation | National Natural Science Foundation of China [No. 51802359] | |
dc.relation | National Natural Science Foundation of China [No. U1702254] | |
dc.relation | China Postdoctoral Science Foundation [2018M643304] | |
dc.relation | Key Research Foundation of the Higher Education Institutions of Henan Province [16A510008] | |
dc.relation | Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2017B090917001] | |
dc.relation | Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2016B090931007] | |
dc.relation | Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2015B090927002] | |
dc.relation | Government of Guangzhou city for international joint-project [201704030020] | |
dc.rights | restrictedAccess | |
dc.source | Optical Materials | |
dc.subject | Cation substitution | en |
dc.subject | Crystal structure | en |
dc.subject | Eu2+ | en |
dc.subject | LED application | en |
dc.subject | Phosphor | en |
dc.subject | Photoluminescence | en |
dc.title | The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved | en |
dc.type | article | en |
dc.rights.license | ARR | |
dcterms.abstract | Wу, Мингмеи; Yан, Јинг; Зханг, Зиwанг; Милићевић, Бојана; Ли, Јунхао; Лианг, Qионгyун; Зхоу, Јианбанг; Wанг, Yунфенг; Схи, Јианxин; | |
dc.rights.holder | © 2019 Elsevier B.V. | |
dc.citation.volume | 95 | |
dc.citation.spage | 109201 | |
dc.identifier.wos | 000497246900005 | |
dc.identifier.doi | 10.1016/j.optmat.2019.109201 | |
dc.citation.rank | M22 | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-85067419255 |
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