New yellow Ba0.93Eu0.07Al2O4 phosphor for warm-white light-emitting diodes through single-emitting-center conversion

Xufan Li; John D Budai; Feng Liu; Jane Y Howe; Jiahua Zhang; Xiao-Jun Wang; Zhanjun Gu; Chengjun Sun; Richard S Meltzer; Zhengwei Pan

doi:10.1038/lsa.2013.6

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New yellow Ba_0.93Eu_0.07Al₂O₄ phosphor for warm-white light-emitting diodes through single-emitting-center conversion

Original Articles

- New yellow Ba_0.93Eu_0.07Al₂O₄ phosphor for warm-white light-emitting diodes through single-emitting-center conversion
- Light: Science & Applications Vol. 2, Issue 1-2, (2013)
- Affiliations：
  
  1.College of Engineering, University of Georgia, Athens, GA 30602, USA
  2.Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA
  3.Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
  4.State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  5.Department of Physics, Georgia Southern University, Statesboro, GA 30460, USA
  6.Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  7.X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
- Author bio：
  
  Professor ZW Pan, College of Engineering & Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA. E-mail: panz@uga.edu
- Funds：
- DOI：10.1038/lsa.2013.6
  CLC：
- Published：2013-06，
  
  Published Online：18 January 2013，
  
  Received：01 April 2012，
  
  Revised：27 June 2012，
  
  Accepted：26 August 2012
- Accepted：
Scan QR Code
Li, X. F. et al. New yellow Ba_0.93Eu_0.07Al₂O₄ phosphor for warm-white light-emitting diodes through single-emitting-center conversion. Light: Science & Applications, 2, e50 (2013).
DOI：

Li, X. F. et al. New yellow Ba_0.93Eu_0.07Al₂O₄ phosphor for warm-white light-emitting diodes through single-emitting-center conversion. Light: Science & Applications, 2, e50 (2013). DOI： 10.1038/lsa.2013.6.

摘要

Abstract

Phosphor-converted white light-emitting diodes for indoor illumination need to be warm-white (i.e.

correlated color temperature

4000 K) with good color rendition (i.e.

color rendering index

80). However

no single-phosphor

single-emitting-center-converted white light-emitting diodes can simultaneously satisfy the color temperature and rendition requirements due to the lack of sufficient red spectral component in the phosphors' emission spectrum. Here

we report a new yellow Ba

0.93

0.07

phosphor that has a new orthorhombic lattice structure and exhibits a broad yellow photoluminescence band with sufficient red spectral component. Warm-white emissions with correlated color temperature

4000 K and color rendering index

80 were readily achieved when combining the Ba

0.93

0.07

phosphor with a blue light-emitting diode (440–470 nm). This study demonstrates that warm-white light-emitting diodes with high color rendition (i.e.

color rendering index

80) can be achieved based on single-phosphor

single-emitting-center conversion.

关键词

Keywords

luminescencesingle-phosphor-conversionwarm-white light-emitting diodeyellow phosphor

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