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Fang MH, Bao Z, Huang WT, Liu RS. Evolutionary Generation of Phosphor Materials and Their Progress in Future Applications for Light-Emitting Diodes. Chem Rev 2022; 122:11474-11513. [DOI: 10.1021/acs.chemrev.1c00952] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mu-Huai Fang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Zhen Bao
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Wen-Tse Huang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Ru-Shi Liu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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2
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Eisenburger L, Strobel P, Schmidt PJ, Bräuniger T, Wright J, Bright EL, Giacobbe C, Oeckler O, Schnick W. Nitridic Analogs of Micas AESi 3 P 4 N 10 (NH) 2 (AE=Mg, Mg 0.94 Ca 0.06 , Ca, Sr). Angew Chem Int Ed Engl 2022; 61:e202114902. [PMID: 34854523 PMCID: PMC9300002 DOI: 10.1002/anie.202114902] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Indexed: 11/30/2022]
Abstract
We present the first nitridic analogs of micas, namely AESi3 P4 N10 (NH)2 (AE=Mg, Mg0.94 Ca0.06 , Ca, Sr), which were synthesized under high-pressure high-temperature conditions at 1400 °C and 8 GPa from the refractory nitrides P3 N5 and Si3 N4 , the respective alkaline earth amides, implementing NH4 F as a mineralizer. The crystal structure was elucidated by single-crystal diffraction with microfocused synchrotron radiation, energy-dispersive X-ray spectroscopic (EDX) mapping with atomic resolution, powder X-ray diffraction, and solid-state NMR. The structures consist of typical tetrahedra-octahedra-tetrahedra (T-O-T) layers with P occupying T and Si occupying O layers, realizing the rare motif of sixfold coordinated silicon atoms in nitrides. The presence of H, as an imide group forming the SiN4 (NH)2 octahedra, is confirmed by SCXRD, MAS-NMR, and IR spectroscopy. Eu2+ -doped samples show tunable narrow-band emission from deep blue to cyan (451-492 nm).
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Affiliation(s)
- Lucien Eisenburger
- Department of ChemistryUniversity of MunichButenandtstraße 5–1381377MunichGermany
| | - Philipp Strobel
- Lumileds Phosphor Center Aachen (LPCA)Lumileds (Germany) GmbHPhilipsstraße 852068AachenGermany
| | - Peter J. Schmidt
- Lumileds Phosphor Center Aachen (LPCA)Lumileds (Germany) GmbHPhilipsstraße 852068AachenGermany
| | - Thomas Bräuniger
- Department of ChemistryUniversity of MunichButenandtstraße 5–1381377MunichGermany
| | - Jonathan Wright
- ESRF, The European Synchrotron71 Avenue des Martyrs, CS4022038043Grenoble Cedex 9France
| | | | - Carlotta Giacobbe
- ESRF, The European Synchrotron71 Avenue des Martyrs, CS4022038043Grenoble Cedex 9France
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Materials ScienceLeipzig UniversityScharnhorststraße 2004275LeipzigGermany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of MunichButenandtstraße 5–1381377MunichGermany
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3
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Eisenburger L, Strobel P, Schmidt PJ, Bräuniger T, Wright J, Bright EL, Giacobbe C, Oeckler O, Schnick W. Nitridic Analogs of Micas
AE
Si
3
P
4
N
10
(NH)
2
(
AE
=Mg, Mg
0.94
Ca
0.06
, Ca, Sr). Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lucien Eisenburger
- Department of Chemistry University of Munich Butenandtstraße 5–13 81377 Munich Germany
| | - Philipp Strobel
- Lumileds Phosphor Center Aachen (LPCA) Lumileds (Germany) GmbH Philipsstraße 8 52068 Aachen Germany
| | - Peter J. Schmidt
- Lumileds Phosphor Center Aachen (LPCA) Lumileds (Germany) GmbH Philipsstraße 8 52068 Aachen Germany
| | - Thomas Bräuniger
- Department of Chemistry University of Munich Butenandtstraße 5–13 81377 Munich Germany
| | - Jonathan Wright
- ESRF, The European Synchrotron 71 Avenue des Martyrs, CS40220 38043 Grenoble Cedex 9 France
| | | | - Carlotta Giacobbe
- ESRF, The European Synchrotron 71 Avenue des Martyrs, CS40220 38043 Grenoble Cedex 9 France
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Materials Science Leipzig University Scharnhorststraße 20 04275 Leipzig Germany
| | - Wolfgang Schnick
- Department of Chemistry University of Munich Butenandtstraße 5–13 81377 Munich Germany
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4
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Gamperl L, Neudert L, Schultz P, Durach D, Schnick W, Oeckler O. Structure Elucidation of Complex Endotaxially Intergrown Lanthanum Barium Oxonitridosilicate Oxides by Combination of Microfocused Synchrotron Radiation and Transmission Electron Microscopy. Chemistry 2021; 27:12835-12844. [PMID: 34240752 PMCID: PMC8518372 DOI: 10.1002/chem.202101665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Indexed: 12/03/2022]
Abstract
Single-crystalline domains in intergrown microcrystalline material of the new compounds Ba22.5+x La55-x [Si129 N240-x Ox ]O3 :Ce3+ and Ba25.5+x La77-x [Si170 N312-x O9+x ]O4 :Ce3+ were identified by transmission electron microscopy (TEM). Precise diffraction data from these domains were collected with microfocused synchrotron radiation so that crystal structure elucidation of the complex disordered networks became possible. They are composed of two different interconnected slabs of which one is similar in both compounds, which explains their notorious intergrowth. The distribution of Ba and La is indicated by the analysis of bond-valence sums and by comparison with isostructural Sr28.5+x La75-x [Si170 N312-x O9+x ]O4 . Ce3+ doping leads to yellow luminescence. This is a showcase that highlights the discovery and accurate characterization of new compounds relevant for luminescence applications from heterogeneous microcrystalline samples by exploiting the capability of the combination of TEM and diffraction using the latest focusing techniques for synchrotron radiation.
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Affiliation(s)
- Lisa Gamperl
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MunichGermany
| | - Lukas Neudert
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MunichGermany
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | - Peter Schultz
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | - Dajana Durach
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MunichGermany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MunichGermany
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
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5
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Wang C, Yu F, Liu Y, Li X, Chen J, Thiyagalingam J, Sepe A. Deploying the Big Data Science Center at the Shanghai Synchrotron Radiation Facility: the first superfacility platform in China. MACHINE LEARNING: SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1088/2632-2153/abe193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
With recent technological advances, large-scale experimental facilities generate huge datasets, into the petabyte range, every year, thereby creating the Big Data deluge effect. Data management, including the collection, management, and curation of these large datasets, is a significantly intensive precursor step in relation to the data analysis that underpins scientific investigations. The rise of artificial intelligence (AI), machine learning (ML), and robotic automation has changed the landscape for experimental facilities, producing a paradigm shift in how different datasets are leveraged for improved intelligence, operation, and data analysis. Therefore, such facilities, known as superfacilities, which fully enable user science while addressing the challenges of the Big Data deluge, are critical for the scientific community. In this work, we discuss the process of setting up the Big Data Science Center within the Shanghai Synchrotron Radiation Facility (SSRF), China’s first superfacility. We provide details of our initiatives for enabling user science at SSRF, with particular consideration given to recent developments in AI, ML, and robotic automation.
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6
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Nentwig M, Eisenburger L, Heinke F, Souchay D, Oeckler O. A Layered Tin Bismuth Selenide with Three Different Building Blocks that Account for an Extremely Large Lattice Parameter of 283 Å. Chemistry 2020; 26:10676-10681. [PMID: 32220131 PMCID: PMC7497267 DOI: 10.1002/chem.202000663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Indexed: 11/23/2022]
Abstract
The layered compound Sn2.8(4) Bi20.2(4) Se27 exhibits an extraordinarily long-periodic 150R stacking sequence. The crystal structure contains three different building blocks, which form upon the addition of Sn to a Bi-rich bismuth selenide. Sn-doped Bi2 double ("2") layers similar to those in elemental bismuth, Sn0.3 Bi1.7 Se3 quintuple ("5") layers and Sn0.4 Bi2.6 Se4 septuple ("7") layers are arranged in a 7525757525|7525757525|7525757525 sequence, which corresponds to a structure with a=4.1819(4) and c=282.64(6) Å in space group R 3 ‾ m. The structure of a microcrystal was determined using microfocused synchrotron radiation and refined as a formally commensurately modulated structure in (3+1)D superspace (superspace group R 3 ‾ m(00γ)00), with a trivial basic structure that contains just one atom. The stacking sequence as well as the cation distribution are confirmed by aberration-corrected scanning transmission electron microscopy (STEM) in combination with chemical mapping by X-ray spectroscopy with atomic resolution. Stacking faults are not typical but have been observed occasionally.
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Affiliation(s)
- Markus Nentwig
- Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Scharnhorststraße 20, 04275, Leipzig, Germany
| | - Lucien Eisenburger
- University of Munich (LMU), Department of Chemistry, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Frank Heinke
- Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Scharnhorststraße 20, 04275, Leipzig, Germany
| | - Daniel Souchay
- Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Scharnhorststraße 20, 04275, Leipzig, Germany
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Scharnhorststraße 20, 04275, Leipzig, Germany
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7
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Wendl S, Eisenburger L, Strobel P, Günther D, Wright JP, Schmidt PJ, Oeckler O, Schnick W. Nitridophosphate-Based Ultra-Narrow-Band Blue-Emitters: Luminescence Properties of AEP 8 N 14 :Eu 2+ (AE=Ca, Sr, Ba). Chemistry 2020; 26:7292-7298. [PMID: 32267576 PMCID: PMC7318337 DOI: 10.1002/chem.202001129] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Indexed: 11/12/2022]
Abstract
The nitridophosphates AEP8 N14 (AE=Ca, Sr, Ba) were synthesized at 4-5 GPa and 1050-1150 °C applying a 1000 t press with multianvil apparatus, following the azide route. The crystal structures of CaP8 N14 and SrP8 N14 are isotypic. The space group Cmcm was confirmed by powder X-ray diffraction. The structure of BaP8 N14 (space group Amm2) was elucidated by a combination of transmission electron microscopy and diffraction of microfocused synchrotron radiation. Phase purity was confirmed by Rietveld refinement. IR spectra are consistent with the structure models and the chemical compositions were confirmed by X-ray spectroscopy. Luminescence properties of Eu2+ -doped samples were investigated upon excitation with UV to blue light. CaP8 N14 (λem =470 nm; fwhm=1380 cm-1 ) and SrP8 N14 (λem =440 nm; fwhm=1350 cm-1 ) can be classified as the first ultra-narrow-band blue-emitting Eu2+ -doped nitridophosphates. BaP8 N14 shows a notably broader blue emission (λem =417/457 nm; fwhm=2075/3550 cm-1 ).
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Affiliation(s)
- Sebastian Wendl
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MünchenGermany
| | - Lucien Eisenburger
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MünchenGermany
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | - Philipp Strobel
- Lumileds Phosphor Center Aachen (LPCA)Lumileds (Germany) GmbHPhilipsstr. 852068AachenGermany
| | - Daniel Günther
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | | | - Peter J. Schmidt
- Lumileds Phosphor Center Aachen (LPCA)Lumileds (Germany) GmbHPhilipsstr. 852068AachenGermany
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MünchenGermany
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8
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Wendl S, Eisenburger L, Zipkat M, Günther D, Wright JP, Schmidt PJ, Oeckler O, Schnick W. BaP 6 N 10 NH:Eu 2+ as a Case Study-An Imidonitridophosphate Showing Luminescence. Chemistry 2020; 26:5010-5016. [PMID: 31944443 PMCID: PMC7187282 DOI: 10.1002/chem.201905082] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Indexed: 11/23/2022]
Abstract
Barium imidonitridophosphate BaP6 N10 NH was synthesized at 5 GPa and 1000 °C with a high-pressure high-temperature approach using the multianvil technique. Ba(N3 )2 , P3 N5 and NH4 Cl were used as starting materials, applying a combination of azide and mineralizer routes. The structure elucidation of BaP6 N10 NH (P63 , a=7.5633(11), c=8.512(2) Å, Z=2) was performed by a combination of transmission electron microscopy and single-crystal diffraction with microfocused synchrotron radiation. Phase purity was verified by Rietveld refinement. 1 H and 31 P solid-state NMR and FTIR spectroscopy are consistent with the structure model. The chemical composition was confirmed by energy-dispersive X-ray spectroscopy and CHNS analyses. Eu2+ -doped samples of BaP6 N10 NH show blue emission upon excitation with UV to blue light (λem =460 nm, fwhm=2423 cm-1 ) representing unprecedented Eu2+ -luminescence of an imidonitride.
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Affiliation(s)
- Sebastian Wendl
- Department of ChemistryLudwig Maximilians University MunichButenandtstr. 5–1381377MünchenGermany
| | - Lucien Eisenburger
- Department of ChemistryLudwig Maximilians University MunichButenandtstr. 5–1381377MünchenGermany
- Institute for Mineralogy, Crystallography and Materials ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | - Mirjam Zipkat
- Department of ChemistryLudwig Maximilians University MunichButenandtstr. 5–1381377MünchenGermany
| | - Daniel Günther
- Institute for Mineralogy, Crystallography and Materials ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | | | - Peter J. Schmidt
- Lumileds Phosphor Center Aachen (LPCA)Lumileds (Germany) GmbHPhilipsstr- 852068AachenGermany
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Materials ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | - Wolfgang Schnick
- Department of ChemistryLudwig Maximilians University MunichButenandtstr. 5–1381377MünchenGermany
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9
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Nentwig M, Kloß SD, Neudert L, Eisenburger L, Schnick W, Oeckler O. The Long-Periodic Loop-Branched Chain Structure of the Oxonitridophosphate La 21 P 40 O 46 N 57 , Elucidated by a Combination of TEM and Microfocused Synchrotron Radiation. Chemistry 2019; 25:14382-14387. [PMID: 31478260 PMCID: PMC6899620 DOI: 10.1002/chem.201902873] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Indexed: 11/10/2022]
Abstract
The lanthanum oxonitridophosphate La21 P40 O46 N57 was synthesized by high-pressure metathesis from partially hydrolysed LiPN2 and LaCl3 at 750-950 °C and 7-9 GPa. The combination of transmission electron microscopy (TEM) and diffraction using microfocused synchrotron radiation revealed a monoclinic crystal structure (space group P21 /n, a=14.042(4), b=7.084(3), c=41.404(10) Å, β=97.73(3)° and Z=2), which is characterized by loop-branched 21 member single chains of P(O,N)4 tetrahedra that extend along [2 0 1]. These chains are related to the loop-branched dreier single chains with dreier-ring loops in stillwellite (CeBSiO5 ). In La21 P40 O46 N57 , these chains are characterized by a complex long-periodic conformation and exhibit disorder that involves La/N and P split positions. This is an extraordinarily long periodicity with respect to branched single chains of tetrahedra. La21 P40 O46 N57 constitutes the first rare-earth oxonitridophosphate exhibiting a chain structure. Single-crystal data are consistent with electron and powder X-ray diffraction.
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Affiliation(s)
- Markus Nentwig
- Institute of Mineralogy, Crystallography and Materials ScienceLeipzig UniversityScharnhorststraße 2004275LeipzigGermany
| | - Simon D. Kloß
- Department of ChemistryUniversity of Munich (LMU)Butenandtstraße 5–13 (D)81377MunichGermany
| | - Lukas Neudert
- Department of ChemistryUniversity of Munich (LMU)Butenandtstraße 5–13 (D)81377MunichGermany
| | - Lucien Eisenburger
- Department of ChemistryUniversity of Munich (LMU)Butenandtstraße 5–13 (D)81377MunichGermany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU)Butenandtstraße 5–13 (D)81377MunichGermany
| | - Oliver Oeckler
- Institute of Mineralogy, Crystallography and Materials ScienceLeipzig UniversityScharnhorststraße 2004275LeipzigGermany
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10
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Kessler FK, Burow AM, Savasci G, Rosenthal T, Schultz P, Wirnhier E, Oeckler O, Ochsenfeld C, Schnick W. Structure Elucidation of a Melam-Melem Adduct by a Combined Approach of Synchrotron X-ray Diffraction and DFT Calculations. Chemistry 2019; 25:8415-8424. [PMID: 31026103 DOI: 10.1002/chem.201901391] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Indexed: 01/24/2023]
Abstract
Melam-melem (1:1), an adduct compound that can be obtained from dicyandiamide in autoclave reactions at 450 °C and elevated ammonia pressure, had previously been described based on mass spectrometry and NMR spectroscopy, but only incompletely characterized. The crystal structure of this compound has now been elucidated by means of synchrotron microfocus diffraction and subsequent quantum-chemical structure optimization applying DFT methods. The structure was refined in triclinic space group P 1 ‾ based on X-ray data. Cell parameters of a=4.56(2), b=19.34(8), c=21.58(11) Å, α=73.34(11)°, β=89.1(2)°, and γ=88.4(2)° were experimentally obtained. The resulting cell volumes agree with the DFT optimized value to within 7 %. Molecular units in the structure form stacks that are interconnected by a vast array of hydrogen bridge interactions. Remarkably large melam dihedral angles of 48.4° were found that allow melam to interact with melem molecules from different stack layers, thus forming a 3D network. π-stacking interactions appear to play no major role in this structure.
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Affiliation(s)
- Fabian K Kessler
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Asbjörn M Burow
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Gökcen Savasci
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany.,Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569, Stuttgart, Germany
| | - Tobias Rosenthal
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Peter Schultz
- Institute for Mineralogy, Crystallography and Materials Science, Faculty of Chemistry and Mineralogy, Leipzig University, Scharnhorststr. 20, 04275, Leipzig, Germany
| | - Eva Wirnhier
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Materials Science, Faculty of Chemistry and Mineralogy, Leipzig University, Scharnhorststr. 20, 04275, Leipzig, Germany
| | - Christian Ochsenfeld
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
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11
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Cordes N, Nentwig M, Eisenburger L, Oeckler O, Schnick W. Ammonothermal Synthesis of the Mixed‐Valence Nitrogen‐Rich Europium Tantalum Ruddlesden‐Popper Phase Eu
II
Eu
III
2
Ta
2
N
4
O
3. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900245] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Niklas Cordes
- Department of Chemistry University of Munich (LMU) Butenandtstr. 5–13 (D) 81377 Munich Germany
| | - Markus Nentwig
- Faculty of Chemistry and Mineralogy Institute for Mineralogy, Crystallography and Materials Science Leipzig University Scharnhorststr. 20 04275 Leipzig Germany
| | - Lucien Eisenburger
- Department of Chemistry University of Munich (LMU) Butenandtstr. 5–13 (D) 81377 Munich Germany
| | - Oliver Oeckler
- Faculty of Chemistry and Mineralogy Institute for Mineralogy, Crystallography and Materials Science Leipzig University Scharnhorststr. 20 04275 Leipzig Germany
| | - Wolfgang Schnick
- Department of Chemistry University of Munich (LMU) Butenandtstr. 5–13 (D) 81377 Munich Germany
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12
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Maak C, Eisenburger L, Wright JP, Nentwig M, Schmidt PJ, Oeckler O, Schnick W. RE4Ba2[Si12O2N16C3]:Eu2+ (RE = Lu, Y): Green-Yellow Emitting Oxonitridocarbidosilicates with a Highly Condensed Network Structure Unraveled through Synchrotron Microdiffraction. Inorg Chem 2018; 57:13840-13846. [DOI: 10.1021/acs.inorgchem.8b02343] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christian Maak
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377 Munich, Germany
| | - Lucien Eisenburger
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377 Munich, Germany
| | - Jonathan P. Wright
- ESRF-The European Synchrotron, 71 avenue des Martyrs, 38000 Grenoble, France
| | - Markus Nentwig
- Institute for Mineralogy, Crystallography and Materials Science; Faculty of Chemistry and Mineralogy, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany
| | - Peter J. Schmidt
- Lumileds Phosphor Center Aachen, Lumileds Germany GmbH, Philipsstraße 8, 52068 Aachen, Germany
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Materials Science; Faculty of Chemistry and Mineralogy, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377 Munich, Germany
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13
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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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14
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Unithrattil S, Arunkumar P, Kim YH, Kim HJ, Vu NH, Heo J, Chung WJ, Im WB. A Phosphosilicate Compound, NaCa 3PSiO 8: Structure Solution and Luminescence Properties. Inorg Chem 2017; 56:15130-15137. [PMID: 29192776 DOI: 10.1021/acs.inorgchem.7b02456] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
NaCa3PSiO8 was synthesized in a microwave-assisted solid-state reaction. The crystal structure of the synthesized compound was solved using a least-squares method, followed by simulated annealing. The compound was crystallized in the orthorhombic space group Pna21, belonging to Laue class mmm. The structure consisted of two layers of cation planes, each of which contained three cation channels. The cation channels in each of the layers ran antiparallel to that of the adjacent layer. All the major cations together constituted four distinct crystallographic sites. The Rietveld refinement of the powder X-ray diffraction data, followed by the maximum-entropy method analysis, confirmed the obtained structure solutions. The electronic band structure of the compound was analyzed through density function theory calculations. Luminescence properties of the compound, upon activating with Eu2+ ions, were analyzed through photoluminescence measurements and decay profile analysis. The compound was found to exhibit green luminescence centered at ∼502 nm, with a typical broadband emission due to the transition from the crystal-field split 4f65d to 4f7 levels.
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Affiliation(s)
- Sanjith Unithrattil
- School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University , 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea
| | - Paulraj Arunkumar
- School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University , 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea
| | - Yoon Hwa Kim
- School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University , 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea
| | - Ha Jun Kim
- School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University , 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea
| | - Ngoc Hung Vu
- School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University , 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea
| | - Jaeyeong Heo
- School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University , 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea
| | - Woon Jin Chung
- Institute for Rare Metals & Division of Advanced Materials Engineering, Kongju National University , Cheonan, Chungnam 330-717, South Korea
| | - Won Bin Im
- School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University , 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea
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15
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Neudert L, Durach D, Fahrnbauer F, Vaughan GBM, Schnick W, Oeckler O. Highly Symmetric AB2 Framework Related to Tridymite in the Disordered Nitridosilicate La24Sr14–7x[Si36N72](O1–xFx)14 (x = 0.489). Inorg Chem 2017; 56:13070-13077. [DOI: 10.1021/acs.inorgchem.7b01862] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lukas Neudert
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5−13, 81377 Munich, Germany
| | - Dajana Durach
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5−13, 81377 Munich, Germany
| | - Felix Fahrnbauer
- Faculty
of Chemistry and Mineralogy, Institute for Mineralogy, Crystallography
and Materials Science, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany
| | - Gavin B. M. Vaughan
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5−13, 81377 Munich, Germany
| | - Oliver Oeckler
- Faculty
of Chemistry and Mineralogy, Institute for Mineralogy, Crystallography
and Materials Science, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany
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16
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Kloß SD, Neudert L, Döblinger M, Nentwig M, Oeckler O, Schnick W. Puzzling Intergrowth in Cerium Nitridophosphate Unraveled by Joint Venture of Aberration-Corrected Scanning Transmission Electron Microscopy and Synchrotron Diffraction. J Am Chem Soc 2017; 139:12724-12735. [DOI: 10.1021/jacs.7b07075] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Simon D. Kloß
- Department
of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377 Munich, Germany
| | - Lukas Neudert
- Department
of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377 Munich, Germany
| | - Markus Döblinger
- Department
of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377 Munich, Germany
| | - Markus Nentwig
- Institute
for Mineralogy, Crystallography and Materials Science, Faculty of
Chemistry and Mineralogy, Leipzig University, Scharnhorststr. 20, 04275 Leipzig, Germany
| | - Oliver Oeckler
- Institute
for Mineralogy, Crystallography and Materials Science, Faculty of
Chemistry and Mineralogy, Leipzig University, Scharnhorststr. 20, 04275 Leipzig, Germany
| | - Wolfgang Schnick
- Department
of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377 Munich, Germany
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17
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Neudert L, Heinke F, Bräuniger T, Pucher FJ, Vaughan GB, Oeckler O, Schnick W. An unusual nitride network of aluminum-centered octahedra and phosphorus-centered tetrahedra and structure determination from microcrystalline samples. Chem Commun (Camb) 2017; 53:2709-2712. [DOI: 10.1039/c7cc00233e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aluminum coordinated by six nitrogen atoms was realized in a new highly condensed network which was obtained via HP–HT synthesis at 5 GPa.
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Affiliation(s)
- Lukas Neudert
- University of Munich (LMU)
- Department of Chemistry
- 81377 Munich
- Germany
| | - Frank Heinke
- Leipzig University
- Faculty of Chemistry and Mineralogy
- 04275 Leipzig
- Germany
| | - Thomas Bräuniger
- University of Munich (LMU)
- Department of Chemistry
- 81377 Munich
- Germany
| | - Florian J. Pucher
- University of Munich (LMU)
- Department of Chemistry
- 81377 Munich
- Germany
| | | | - Oliver Oeckler
- Leipzig University
- Faculty of Chemistry and Mineralogy
- 04275 Leipzig
- Germany
| | - Wolfgang Schnick
- University of Munich (LMU)
- Department of Chemistry
- 81377 Munich
- Germany
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18
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Schultz P, Durach D, Schnick W, Oeckler O. Ba1.63La7.39Si11N23Cl0.42:Ce3+- A Nitridosilicate Chloride with a Zeolite-Like Structure. Z Anorg Allg Chem 2016. [DOI: 10.1002/zaac.201600090] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Durach D, Schultz P, Oeckler O, Schnick W. From Minor Side Phases to Bulk Samples of Lanthanum Oxonitridosilicates: An Investigation with Microfocused Synchrotron Radiation. Inorg Chem 2016; 55:3624-9. [DOI: 10.1021/acs.inorgchem.6b00143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dajana Durach
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377 Munich, Germany
| | - Peter Schultz
- Faculty of Chemistry
and Mineralogy, Institute for Mineralogy, Crystallography and Materials
Science, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany
| | - Oliver Oeckler
- Faculty of Chemistry
and Mineralogy, Institute for Mineralogy, Crystallography and Materials
Science, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377 Munich, Germany
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20
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Durach D, Fahrnbauer F, Oeckler O, Schnick W. La6Ba3[Si17N29O2]Cl—An Oxonitridosilicate Chloride with Exceptional Structural Motifs. Inorg Chem 2015; 54:8727-32. [DOI: 10.1021/acs.inorgchem.5b01368] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dajana Durach
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Felix Fahrnbauer
- Faculty of Chemistry
and Mineralogy, Institute for Mineralogy, Crystallography and Materials
Science, Leipzig University, Scharnhorststrasse 20, 04275 Leipzig, Germany
| | - Oliver Oeckler
- Faculty of Chemistry
and Mineralogy, Institute for Mineralogy, Crystallography and Materials
Science, Leipzig University, Scharnhorststrasse 20, 04275 Leipzig, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany
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