Near-ultraviolet excitable orange-yellow Sr3(Al2 O5)Cl2: Eu2+ phosphor for potential application in light-emitting diodes

Yu Sheng Tang, Shu Fen Hu, Wei Chih Ke, Chun Che Lin, Nitin C. Bagkar, Ru Shi Liu

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Abstract

Sr3 (Al2 O5) Cl2 phosphor doped with Eu2+ was prepared by a soli-state reaction. This phosphor emits a broad orange-yellow luminescence with a peak wavelength of 620 nm and a full width at half maximum of about 175 nm under near-ultraviolet (NUV) excitation at ∼400 nm. Yellow light-emitting diodes (LEDs) for general lighting were fabricated by combining Sr3 (Al2 O5) Cl2: Eu2+ phosphor with an NUV chip. The phosphor-converted LEDs had a color temperature of about 2300 K and their color rendering index was 74.

Original languageEnglish
Article number131114
JournalApplied Physics Letters
Volume93
Issue number13
DOIs
Publication statusPublished - 2008 Oct 13

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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