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Influences of thermal post-treatment on the Mn valence states and luminescence properties of red-emitting Lu3Al5O12: Mn4+ transparent ceramic phosphors
Zhang, YL; Hu, S; Liu, YL; Chen, L; Wang, ZJ; Zhou, GH; Wang, SW
2020-03-01
Source PublicationOPTICAL MATERIALS
ISSN0925-3467
SubtypeArticle
AbstractThe Lu3Al5O12: Mn4+ (LuAG: Mn4+) ceramic phosphors were prepared by solid-state reaction method under vacuum. The influences of the thermal post-treatment processes including treating atmosphere, temperature and holding time on the Mn valence state evolutions and luminescence properties of the LuAG: Mn4+ ceramics were elaborately studied. In-line transmittance and electron spin resonance (ESR) spectra were conducted to record the valence state evolutions of Mn ions. The PL spectra were measured to exhibit the influence of valence state of Mn on the luminescence properties. The results indicated that the thermal post-treatment is of great importance in preparing red-emitting LuAG: Mn4+. Specifically, the strong O-2 oxidizing atmosphere is more favorable for converting Mn4+ into Mn4+. Mn2+ starts to be markedly oxidized to Mn4+ under 1400 degrees C heat-treatment in O-2, and it can be totally oxidized into Mn4+ at 1600 degrees C. However, the most intense red emission occurs at 1500 degrees C. Further elongating the holding time at 1500 degrees C is an effective way to increase Mn4+ content, as well as the emission intensity of the ceramic phosphor.
DOI10.1016/j.optmat.2020.109705
WOS KeywordCOLOR CONVERTER ; GENERATION ; EMISSION ; CE3+ ; MG2+
Language英语
WOS Research AreaMaterials Science ; Optics
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28245
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhang, YL,Hu, S,Liu, YL,et al. Influences of thermal post-treatment on the Mn valence states and luminescence properties of red-emitting Lu3Al5O12: Mn4+ transparent ceramic phosphors[J]. OPTICAL MATERIALS,2020.
APA Zhang, YL.,Hu, S.,Liu, YL.,Chen, L.,Wang, ZJ.,...&Wang, SW.(2020).Influences of thermal post-treatment on the Mn valence states and luminescence properties of red-emitting Lu3Al5O12: Mn4+ transparent ceramic phosphors.OPTICAL MATERIALS.
MLA Zhang, YL,et al."Influences of thermal post-treatment on the Mn valence states and luminescence properties of red-emitting Lu3Al5O12: Mn4+ transparent ceramic phosphors".OPTICAL MATERIALS (2020).
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