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Mao A, Wang X, Guo Y, Zhai X, Lv P. Oxynitride K 2Ba 6.72Si 16O 40-1.5yN y:0.28Eu 2+ phosphor with high thermal stability realized by crystal field engineering. Dalton Trans 2023; 52:16173-16183. [PMID: 37855179 DOI: 10.1039/d3dt02325g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Extensive research has gone into modifying the chemical composition of phosphors to achieve desirable optical properties. Here, oxynitride phosphors K2Ba6.72Si16O40-1.5yNy:0.28Eu2+ were synthesized by introducing N3- (y) into a K2Ba6.72Si16O40:0.28Eu2+ lattice. An uneven shrinking of the cell parameters a, b, and c was observed through a combination of X-ray diffraction studies and Rietveld refinements. This shrinking caused a large centroid shift (εc) and splitting of the 5d energy level (εcfs), thus inducing the broadening of the excitation spectra (104 → 127 nm, y = 0 → y = 12) and the red shift of the emission spectra (501 → 543 nm, y = 0 → y = 12). The modified series of samples have a broad excitation spectrum, suitable of use in UV, near-UV, and blue light-emitting LEDs. In addition, the optimal sample, K2Ba6.72Si16O31N6:0.28Eu2+, benefits from an increased activation energy and thermal stability.
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Affiliation(s)
- Aijun Mao
- Department of Materials Science, School of Materials Science & Engineering, Lanzhou Jiaotong University, Lanzhou, P. R. China.
| | - Xinwei Wang
- Department of Materials Science, School of Materials Science & Engineering, Lanzhou Jiaotong University, Lanzhou, P. R. China.
| | - Yali Guo
- Department of Materials Science, School of Materials Science & Engineering, Lanzhou Jiaotong University, Lanzhou, P. R. China.
| | - Xuejie Zhai
- Department of Materials Science, School of Materials Science & Engineering, Lanzhou Jiaotong University, Lanzhou, P. R. China.
| | - Pai Lv
- Department of Materials Science, School of Materials Science & Engineering, Lanzhou Jiaotong University, Lanzhou, P. R. China.
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Yoshimura F, Nagasako M, Yamane H. Synthesis, crystal structure, and photoluminescence of the new nitridoboroaluminosilicate phosphor (Sr0.93Eu0.07)11B2(Al0.275Si0.725)40N59. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lv Y, Li Y, Fan S, Chen C, Cai Y, Xu H, Xie RJ. A broadband yellow Yb 2+-doped oxynitride phosphor for high-performance white light-emitting diodes. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01444k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A broadband, efficient and stable yellow (Ba,Sr)Si3Al3O4N5:Yb2+ phosphor shows promising applications in single-phosphor-converted warm w-LEDs.
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Affiliation(s)
- Ying Lv
- Nanchang Key Laboratory of Photoelectric Conversion and Energy Storage Materials, College of Science, Nanchang Institute of Technology, Nanchang 330099, China
- College of Materials, Xiamen University, Xiamen 361005, China
| | - Yunkai Li
- Nanchang Key Laboratory of Photoelectric Conversion and Energy Storage Materials, College of Science, Nanchang Institute of Technology, Nanchang 330099, China
| | - Siting Fan
- Nanchang Key Laboratory of Photoelectric Conversion and Energy Storage Materials, College of Science, Nanchang Institute of Technology, Nanchang 330099, China
| | - Changjian Chen
- College of Materials, Xiamen University, Xiamen 361005, China
| | - Yuting Cai
- College of Materials, Xiamen University, Xiamen 361005, China
| | - Hai Xu
- Lattice Power Corporation, Nanchang 330029, China
| | - Rong-Jun Xie
- College of Materials, Xiamen University, Xiamen 361005, China
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Wu Y, Zhuang Y, Xie RJ, Ruan K, Ouyang X. Novel Mn4+ doped red phosphors composed of MgAl2O4 and CaAl12O19 phases for light-emitting diodes. Dalton Trans 2020; 49:3606-3614. [DOI: 10.1039/d0dt00118j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The EL spectra and photographs of the as-obtained plant growth LED and white LED by using CMA:Mn4+ red phosphors.
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Affiliation(s)
- Yibing Wu
- College of Material Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- P. R. China
- College of Mechanical and Electronic Engineering
| | - Yixi Zhuang
- College of Materials and Fujian Provincial Key Laboratory of Materials Genome
- Xiamen University
- Xiamen 361005
- P. R. China
| | - Rong-Jun Xie
- College of Materials and Fujian Provincial Key Laboratory of Materials Genome
- Xiamen University
- Xiamen 361005
- P. R. China
| | - Kaibin Ruan
- College of Mechanical and Electronic Engineering
- Fujian Agriculture and Forestry University
- Fuzhou
- P. R. China
| | - Xinhua Ouyang
- College of Material Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- P. R. China
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Wang CY, Takeda T, Melvin Ten Kate O, Funahashi S, Xie RJ, Takahashi K, Hirosaki N. New Deep-Blue-Emitting Ce-Doped A 4-mB nC 19+2mX 29+m (A = Sr, La; B = Li; C = Si, Al; X = O, N; 0 ≤ m ≤ 1; 0 ≤ n ≤ 1) Phosphors for High-Color-Rendering Warm White Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:29047-29055. [PMID: 31293162 DOI: 10.1021/acsami.9b09982] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A new sialon Eu3.60LiSi13.78Al6.03O6.82N22.59 has been discovered via the single-particle diagnosis approach. Its crystal structure (space group P3m1) was solved and refined from single-crystal X-ray diffraction data. It has the interesting feature of two types of disorder at the Eu2 site: positional disorder (Eu2a/Eu2b) and substitutional disorder with (Si/Al)2(O/N). The structure is generalized to the formula A4-mBnC19+2mX29+m (A = Sr, La, Eu, Ce; B = Li; C = Si, Al; X = O, N; 0 ≤ m ≤ 1; 0 ≤ n ≤ 1), of which Sr3.61LiSi14.27Al5.61O6.19N23.25 (Sr-sialon, m = 0.41, n = 1) and La2.85Sr0.76LiSi14.86Al4.93O2.89N26.51 (LaSr-sialon, m = 0.40, n = 1) are two examples that have been obtained as a single-phase powder. Sr-sialon:Eu and LaSr-sialon:Eu both show blue to yellow emission, depending on the Eu concentration, whereas Sr-sialon:1% Ce shows a deep-blue emission band centered at 422 nm with a full width at half-maximum of 80 nm and an internal quantum efficiency of 80% (λex = 355 nm). The latter phosphor has very good thermal stability of both emission intensity and color. A white light-emitting diode (LED) containing the newly discovered Sr-sialon:5% Ce as the blue phosphor component shows excellent color-rendering indices (Ra = 96 and R12 = 97) with a correlated color temperature of 4255 K. This indicates that Sr-sialon:Ce is a highly promising deep-blue phosphor for illumination grade white LEDs.
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Affiliation(s)
- Chun-Yun Wang
- Sialon Group , National Institute for Materials Science , Namiki 1-1 , Tsukuba , Ibaraki 305-0044 , Japan
- Graduate School of Chemical Sciences and Engineering , Hokkaido University , Sapporo , Hokkaido 060-6828 , Japan
- Tsinghua-Berkeley Shenzhen Institute , Tsinghua University , Shenzhen 51800 , China
| | - Takashi Takeda
- Sialon Group , National Institute for Materials Science , Namiki 1-1 , Tsukuba , Ibaraki 305-0044 , Japan
- Graduate School of Chemical Sciences and Engineering , Hokkaido University , Sapporo , Hokkaido 060-6828 , Japan
| | - Otmar Melvin Ten Kate
- Sialon Group , National Institute for Materials Science , Namiki 1-1 , Tsukuba , Ibaraki 305-0044 , Japan
- Department of Chemical Engineering, Applied Sciences , Delft University of Technology , Delft 2629HZ , Netherlands
| | - Shiro Funahashi
- Sialon Group , National Institute for Materials Science , Namiki 1-1 , Tsukuba , Ibaraki 305-0044 , Japan
| | - Rong-Jun Xie
- College of Materials , Xiamen University , Simingnan-Road 422 , Xiamen 361005 , P. R. China
| | - Kohsei Takahashi
- Sialon Group , National Institute for Materials Science , Namiki 1-1 , Tsukuba , Ibaraki 305-0044 , Japan
| | - Naoto Hirosaki
- Sialon Group , National Institute for Materials Science , Namiki 1-1 , Tsukuba , Ibaraki 305-0044 , Japan
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Wu W, Chao K, Liu W, Wei L, Hu D, Wang T, Tegus O. Enhanced orange emission by doping CeB6 in CaAlSiN3:Ce3+ phosphor for application in white LEDs. J RARE EARTH 2018. [DOI: 10.1016/j.jre.2018.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nitride and oxynitride phosphors for white LEDs: Synthesis, new phosphor discovery, crystal structure. PROG SOLID STATE CH 2018. [DOI: 10.1016/j.progsolidstchem.2017.11.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Yoshimura F, Yamane H. Synthesis, Crystal Structure, and Photoluminescence of the Boron-Aluminum-Silicon Nitride Phosphor Sr 3BAl 5Si 9N 20:Eu. Inorg Chem 2018; 57:5677-5683. [PMID: 29694032 DOI: 10.1021/acs.inorgchem.8b00711] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Single crystals of new boron-aluminum-silicon nitrides, Sr3BAl5Si9N20 and Sr2.91Eu0.09BAl5Si9N20, were synthesized by heating binary nitride mixtures at 2030 °C under a N2 pressure of 0.85 MPa. The X-ray diffraction spots from single crystals of these two compounds were indexed with the trigonal cell parameters a = 22.7406(8) Å, c = 5.7066(2) Å and a = 22.7439(8) Å, c = 5.7050(2) Å, respectively, and the crystal structures were determined to have the space group P3 c1, with B atoms situated at planar 3-fold-coordinated N sites. A three-dimensional framework structure is constructed for these materials based on the sharing of N atoms of Al/Si-N4 tetrahedra and B-N3 triangles. In this framework, Sr/Eu atoms are located at three sites, surrounded by 10 N atoms. Single crystals of Sr2.91Eu0.09BAl5Si9N20 emitted yellow light with a peak wavelength of 565 nm and a full width at half-maximum of 106 nm under 450 nm light irradiation. The emission intensity of these crystals at 200 °C was found to be 12% of the intensity at 25 °C.
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Affiliation(s)
- Fumitaka Yoshimura
- Mitsubishi Chemical Corporation . 1060 Naruda , Odawara City , Kanagawa 250-0862 , Japan.,Institute of Multidisciplinary Research for Advanced Materials , Tohoku University , 2-1-1 Katahira , Aoba-ku , Sendai 980-8577 , Japan
| | - Hisanori Yamane
- Institute of Multidisciplinary Research for Advanced Materials , Tohoku University , 2-1-1 Katahira , Aoba-ku , Sendai 980-8577 , Japan
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Wang L, Xie RJ, Suehiro T, Takeda T, Hirosaki N. Down-Conversion Nitride Materials for Solid State Lighting: Recent Advances and Perspectives. Chem Rev 2018; 118:1951-2009. [PMID: 29392943 DOI: 10.1021/acs.chemrev.7b00284] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Advances in solid state white lighting technologies witness the explosive development of phosphor materials (down-conversion luminescent materials). A large amount of evidence has demonstrated the revolutionary role of the emerging nitride phosphors in producing superior white light-emitting diodes for lighting and display applications. The structural and compositional versatility together with the unique local coordination environments enable nitride materials to have compelling luminescent properties such as abundant emission colors, controllable photoluminescence spectra, high conversion efficiency, and small thermal quenching/degradation. Here, we summarize the state-of-art progress on this novel family of luminescent materials and discuss the topics of materials discovery, crystal chemistry, structure-related luminescence, temperature-dependent luminescence, and spectral tailoring. We also overview different types of nitride phosphors and their applications in solid state lighting, including general illumination, backlighting, and laser-driven lighting. Finally, the challenges and outlooks in this type of promising down-conversion materials are highlighted.
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Affiliation(s)
- Le Wang
- College of Optical and Electronic Technology, China Jiliang University , Hangzhou, Zhejiang 310018, China
| | - Rong-Jun Xie
- College of Materials, Xiamen University , Simingnan-Road 422, Xiamen 361005, China
| | - Takayuki Suehiro
- Sialon Group, National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takashi Takeda
- Sialon Group, National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Naoto Hirosaki
- Sialon Group, National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Yoshimura F, Yamane H, Nagasako M. Synthesis and crystal structure of a new aluminum-silicon-nitride phosphor containing boron, Ba 5 B 2 Al 4 Si 32 N 52 :Eu. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.03.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Zhou W, Gu M, Ou Y, Zhang C, Zhang X, Zhou L, Liang H. Concentration-Driven Selectivity of Energy Transfer Channels and Color Tunability in Ba3La(PO4)3:Tb3+, Sm3+ for Warm White LEDs. Inorg Chem 2017. [DOI: 10.1021/acs.inorgchem.7b00737] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Weijie Zhou
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of
Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Meng Gu
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of
Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Yiyi Ou
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of
Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Caihua Zhang
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of
Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Xuejie Zhang
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of
Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Lei Zhou
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of
Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Hongbin Liang
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of
Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
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