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  Narrow-band red-emitting Sr[LiAl3N4]:Eu2+ as a next-generation LED-phosphor material

Pust, P., Weiler, V., Hecht, C., Tücks, A., Wochnik, A. S., Henß, A.-K., et al. (2014). Narrow-band red-emitting Sr[LiAl3N4]:Eu2+ as a next-generation LED-phosphor material. Nature Materials, 13(9), 891-896. doi:10.1038/NMAT4012.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-B8A1-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-6D80-4
Genre: Journal Article

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 Creators:
Pust, Philipp1, Author              
Weiler, Volker2, Author              
Hecht, Cora2, Author              
Tücks, Andreas2, Author              
Wochnik, Angela S.3, Author              
Henß, Ann-Kathrin1, Author              
Wiechert, Detlef2, Author              
Scheu, Christina4, Author              
Schmidt, Peter J.2, Author              
Schnick, Wolfgang1, Author              
Affiliations:
1Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany, ou_persistent22              
2Philips Technologie GmbH Lumileds Development Center Aachen, Philipsstrasse 8, 52068 Aachen, Germany, ou_persistent22              
3Department of Chemistry, LMU Munich, Germany , ou_persistent22              
4Department of Chemistry and Center for NanoScience (CeNS), Ludwig-Maximilians Universität München, Germany, ou_persistent22              

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Free keywords: LUMINESCENCE PROPERTIES; CONVERSION PHOSPHORS; NITRIDE PHOSPHORS; HOST LATTICE; DIODES; OXYNITRIDE; BA2SI5N8; CRYSTAL; SRChemistry; Materials Science; Physics;
 Abstract: To facilitate the next generation of high-power white-light-emitting diodes (white LEDs), the discovery of more efficient red-emitting phosphor materials is essential. In this regard, the hardly explored compound class of nitridoaluminates affords a new material with superior luminescence properties. Doped with Eu2+, Sr[LiAl3N4] emerged as a new high-performance narrow-band red-emitting phosphor material, which can efficiently be excited by GaN-based blue LEDs. Owing to the highly efficient red emission at lambda(max) similar to 650 nm with a full-width at half-maximum of similar to 1,180 cm(-1) (similar to 50 nm) that shows only very low thermal quenching (>95% relative to the quantum efficiency at 200 degrees C), a prototype phosphor-converted LED (pc-LED), employing Sr[LiAl3N4]:Eu2+ as the red-emitting component, already shows an increase of 14% in luminous efficacy compared with a commercially available high colour rendering index (CRI) LED, together with an excellent colour rendition (R(a)8 = 91, R9 = 57). Therefore, we predict great potential for industrial applications in high-power white pc-LEDs.

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Language(s): eng - English
 Dates: 2014-09
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: ISI: 000341343500021
DOI: 10.1038/NMAT4012
 Degree: -

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Title: Nature Materials
  Abbreviation : Nat. Mater.
Source Genre: Journal
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Publ. Info: London, UK : Nature Pub. Group
Pages: - Volume / Issue: 13 (9) Sequence Number: - Start / End Page: 891 - 896 Identifier: ISSN: 1476-1122
CoNE: https://pure.mpg.de/cone/journals/resource/111054835734000