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  Ca[LiAl3N4]:Eu2+-A narrow-band red-emitting nitridolithoaluminate

Pust, P., Wochnik, A. S., Baumann, E., Schmidt, P. J., Wiechert, D., Scheu, C., et al. (2014). Ca[LiAl3N4]:Eu2+-A narrow-band red-emitting nitridolithoaluminate. Chemistry of Materials, 26(11), 3544-3549. doi:10.1021/cm501162n.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-B926-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-6D85-F
Genre: Journal Article

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 Creators:
Pust, Philipp1, Author              
Wochnik, Angela S.2, Author              
Baumann, Elen3, Author              
Schmidt, Peter J.4, Author              
Wiechert, Detlef4, Author              
Scheu, Christina3, Author              
Schnick, Wolfgang1, Author              
Affiliations:
1Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany , ou_persistent22              
2Department of Chemistry, LMU Munich, Germany , ou_persistent22              
3Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany, ou_persistent22              
4Philips Technologie GmbH Lumileds Development Center Aachen, Philipsstrasse 8, 52068 Aachen, Germany, ou_persistent22              

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Free keywords: LED CONVERSION PHOSPHORS; LUMINESCENCE PROPERTIES; HOST LATTICE; SR; DIODES; NITRIDES; CRYSTAL; MG; CAChemistry; Materials Science;
 Abstract: Ca[LiAl3N4]:Eu2+ is an intriguing new narrow-band red-emitting phosphor material with potential for application in high-power phosphor-converted light-emitting diodes (pc-LEDs). With excitation by blue InGaN-based LEDs, the compound exhibits an emission maximum at 668 nm with a full width at half maximum of only 1333 cm(-1) (similar to 60 nm). Ca[LiAl3N4]:Eu2+ was synthesized from Ca, LiAlH4, LiN3, AlF3, and EuF3 in weld-shut Ta ampules, and the structure was solved and refined on the basis of single-crystal X-ray diffraction data. After isotypical crystallization with Na[Li3SiO4], the compound forms a highly condensed framework of AlN4 and LiN4 tetrahedra [I4(1)/a (no. 88), Z = 16, a = 11.1600(16) angstrom, and c = 12.865(3) angstrom] and can thus by classified as a nitridolithoaluminate. Both types of polyhedra are connected to each other by common edges and corners, yielding a high degree of condensation, kappa = 1. The Ca site is positioned in the center of vierer ring channels along [001] and coordinated in a cuboidal manner by eight N atoms. To validate the presence of Li, transmission electron microscopy (TEM) investigations employing electron energy-loss spectroscopy (EELS) were carried out. Furthermore, to confirm the electrostatic bonding interactions and the chemical composition, lattice energy calculations [Madelung part of lattice energy (MAPLE)] have been performed.

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Language(s): eng - English
 Dates: 2014-06-10
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: ISI: 000337199400029
DOI: 10.1021/cm501162n
 Degree: -

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Title: Chemistry of Materials
  Other : Chem. Mater.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 26 (11) Sequence Number: - Start / End Page: 3544 - 3549 Identifier: ISSN: 0897-4756
CoNE: https://pure.mpg.de/cone/journals/resource/954925561571