Intriguing luminescence properties of (Ba, Sr)3Si6O9N4: Eu2+ phosphors via modifying synthesis method and cation substitution

Yin, Liangjun; Ji, Wei; Liu, Shi Yu; He, Wei; Zhao, Ling; Xu, Xin; Fabre, Andrea; Dierre, Benjamin; Lee, Ming‐Hsien; Ommen, J. Ruud van; Hintzen, H. T.

doi:10.1016/j.jallcom.2016.05.009

Cited by 32 publications

(8 citation statements)

References 36 publications

(8 reference statements)

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“…The main difficulty when tackling this question is that a change of a compound's structure is usually linked to a change in its composition and vice versa. The influence of the composition can be evaluated by studying the effect of a partial substitution of one or more of the constituting elements in a system, which tolerates this substitution without undergoing structural change [17][18][19][20][21][22][23]. Much rarer is the case of a host structure which exhibits polymorphism, like e.g.…”

Section: Introductionmentioning

confidence: 99%

Polymorphs and derivates of Sr₂LiAlO₄:Eu²⁺

Hoerder

Peschke

Wurst

et al. 2019

Zeitschrift Für Naturforschung B

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Recently, Wang et al. (Z. Wang, J. Ha, Y. H. Kim, W. B. Im, J. McKittrick, S. P. Ong, Joule2018, 2, 914–926) predicted and discovered Sr2LiAlO4, a quaternary compound with a layered structure crystallizing in the monoclinic space group P21/m, and they refined the structure from PXRD data. Upon partially substituting strontium with europium, the substance exhibits a yellow broadband luminescence consisting of two overlapping emission bands. In this paper, the crystal structure of Sr2LiAlO4 is confirmed by additional SC-XRD measurements and a newly discovered polymorph of Sr2LiAlO4 is presented crystallizing in the orthorhombic space group Cmcm. When Eu2+ is incorporated, this polymorph exhibits only one of the emission bands present in the P21/m-polymorph. Additionally, two substitutional variants of Sr2LiAlO4 are presented along with their luminescence properties upon incorporating Eu2+. One with a partial substitution of strontium for barium, leading to a structure in space group Pnma, and one with a partial substitution of oxygen for nitrogen, exhibiting the structure in space group Cmcm. The structure-property relationships in the above mentioned compounds are discussed with regard to their luminescence performance.

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Section: Introductionmentioning

confidence: 99%

Polymorphs and derivates of Sr₂LiAlO₄:Eu²⁺

Hoerder

Peschke

Wurst

et al. 2019

Zeitschrift Für Naturforschung B

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“…Recently, extensive investigations have focused on rare-earth-doped oxynitride phosphors due to their high quantum efficiency, adjustable composition, and antioxidation properties [1,2,3,4]. These characteristics make them successful applications in White-Light Emitting Diode (W-LED).…”

Section: Introductionmentioning

confidence: 99%

Insight the Luminescence Properties of AlON: Eu, Mg Phosphor under VUV Excitation

et al. 2017

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Owing to high quantum efficiency, adjustable composition and antioxidation properties of oxynitride phosphors, extensive investigations have focused on their photoluminescence properties under low-energy light excitation (UV or blue light). However, the vacuum ultraviolet (VUV) luminescence properties of oxynitride phosphors are rarely researched. Present work studies the structure and VUV luminescence properties of an oxynitride phosphor: AlON: Eu, Mg, which is synthesized by solid-state reaction. Under 147 nm excitation, it was found that AlON: Eu, Mg phosphor shows a blue emission band centered at about 470 nm. The first principle calculation is used to analyze the origin of the VUV absorption. Compared with BaMgAl10O17: Eu2+ phosphor, AlON: Eu, Mg phosphor shows better thermal stability.

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“…Several phenomena can contribute to the change of covalence, CFS and Stokes shift . [ 7c,8b,16 ] The substitution has little effect on covalence. However, the redshift can be affected by lattice parameters and lattice shrink of Eu ions, which leads to enhanced CFS.…”

Section: Resultsmentioning

confidence: 99%

“…[ 7 ] Thus far, cationic substitutions seem to be a promising approach to realize low‐energy emission. [ 7a,8 ]…”

Section: Introductionmentioning

confidence: 99%

Rapid Synthesis of Red‐Emitting Sr₂Sc_0.5Ga_1.5O₅:Eu²⁺ Phosphors and the Tunable Photoluminescence Via Sr/Ba Substitution

Yang

Zhou

Qiao

et al. 2021

Advanced Optical Materials

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efficiency, compact size, environmental friendliness as well as their wide applications in modern indoor illumination, displays devices flashlights, auto bulb, etc. [1] Amongst, one of the challenges lies in the development of the novel, highly efficient, and stable red phosphors with adjustable emission wavelengths for different requirements. In solid-state lighting, the current solutions for fabricating highquality pc-WLEDs (color-rendering index, R a > 80; color-correlated temperature, CCT < 4500 K) mainly rely on red-emitting nitride phosphors (e.g.,: CaAlSiN 3 :Eu 2+ , Sr[LiAl 3 N 4 ]:Eu 2+ , etc.) or fluoride phosphors represented by K 2 SiF 6 :Mn 4+ . [2] However, harsh conditions of high temperature, high pressure, and expensive reagents are required for the synthesis of nitride phosphors, as well as the unavoidably use of highly toxic and corrosive anhydrous HF for fluoride phosphors. Moreover, Eu 3+ -doped phosphors suffer from weak absorption in the blue region and low luminous efficiency for the pc-WLEDs applications. [3] In comparison, it will be the optimum alternative if one can find suitable Eu 2+ -doped oxide-based red phosphors, which can be pumped by blue light and also possess high quantum efficiency, thermal stable and tunable emission. Therefore, it is critical to develop new design principles Discovering new Eu2+ -doped red-emitting phosphors in oxide-based materials is a challenge for white light-emitting diode (WLED) applications. Herein, a highly efficient high-frequency induction heating method is employed to rapidly prepare the red-emitting Sr 2 Sc 0.5 Ga 1.5 O 5 :Eu 2+ phosphors peaking at 614 nm and exhibiting a high photoluminescence quantum yield of 78.4% under the excitation of 440 nm. The structural and spectral analyses suggest that Eu 2+ ions tend to enter the [Sc1/Ga1O 6 ] and [Ga2O 6 ] polyhedrons with small coordination numbers, leading to the broadband red emission originated from large crystal field splitting of Eu 2+ 5d level. The chemical substitution of Ba in the Sr site enhances the thermal stability and helps to the photoluminescence tuning from 614 to 728 nm in SrBaSc 0.5 Ga 1.5 O 5 :Eu 2+ . The WLED device fabricated by blending the red Sr 1.7 Ba 0.3 Sc 0.5 Ga 1.5 O 5 :Eu 2+ and yellow Y 3 (Al, Ga) 5 O 12 :Ce 3+ phosphors shows a high color-rendering index (R a = 91.1), and low color-correlated temperature (CCT = 4750 K). This study aims to provide a new synthesis method and design principle for guiding the development of Eu 2+ -doped oxide-based red phosphors with low preparation cost; moreover, the photoluminescence tuning strategy via cation substitutions is essential to achieve tunable emission, even the near-infrared luminescence.

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Intriguing luminescence properties of (Ba, Sr)3Si6O9N4: Eu2+ phosphors via modifying synthesis method and cation substitution

Abstract: contributed equally to this paper.© 2016 Manuscript version made available under CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ Link to formal publication Journal of Alloys and Compounds (Elsevier)

Cited by 32 publications

References 36 publications

Polymorphs and derivates of Sr₂LiAlO₄:Eu²⁺

Polymorphs and derivates of Sr₂LiAlO₄:Eu²⁺

Insight the Luminescence Properties of AlON: Eu, Mg Phosphor under VUV Excitation

Rapid Synthesis of Red‐Emitting Sr₂Sc_0.5Ga_1.5O₅:Eu²⁺ Phosphors and the Tunable Photoluminescence Via Sr/Ba Substitution

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Intriguing luminescence properties of (Ba, Sr)3Si6O9N4: Eu2+ phosphors via modifying synthesis method and cation substitution

Abstract: contributed equally to this paper.© 2016 Manuscript version made available under CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ Link to formal publication Journal of Alloys and Compounds (Elsevier)

Cited by 32 publications

References 36 publications

Polymorphs and derivates of Sr2LiAlO4:Eu2+

Polymorphs and derivates of Sr2LiAlO4:Eu2+

Insight the Luminescence Properties of AlON: Eu, Mg Phosphor under VUV Excitation

Rapid Synthesis of Red‐Emitting Sr2Sc0.5Ga1.5O5:Eu2+ Phosphors and the Tunable Photoluminescence Via Sr/Ba Substitution

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Polymorphs and derivates of Sr₂LiAlO₄:Eu²⁺

Polymorphs and derivates of Sr₂LiAlO₄:Eu²⁺

Rapid Synthesis of Red‐Emitting Sr₂Sc_0.5Ga_1.5O₅:Eu²⁺ Phosphors and the Tunable Photoluminescence Via Sr/Ba Substitution