Article Characterization and properties of green-emitting beta-SiAlON : Eu2+ powder phosphors for white light-emitting diodes

Naoto Hirosaki SAMURAI ORCID (National Institute for Materials ScienceROR) ; Rong-Jun Xie ORCID (National Institute for Materials ScienceROR) ; Koji Kimoto SAMURAI ORCID (National Institute for Materials ScienceROR) ; Takashi Sekiguchi ORCID (National Institute for Materials ScienceROR) ; Yoshinobu Yamamoto (National Institute for Materials ScienceROR) ; Takayuki Suehiro SAMURAI ORCID (National Institute for Materials ScienceROR) ; Mamoru Mitomo

Applied Physics Letters 86 (2005) 211905.pdf
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Naoto Hirosaki, Rong-Jun Xie, Koji Kimoto, Takashi Sekiguchi, Yoshinobu Yamamoto, Takayuki Suehiro, Mamoru Mitomo. Characterization and properties of green-emitting beta-SiAlON : Eu2+ powder phosphors for white light-emitting diodes . Applied Physics Letters. 2005, 86 (21), 211905. https://doi.org/10.1063/1.1935027

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(abstract)

This letter reports a b-SiAlON:Eu2+ green phosphor with the composition of Eu0.00296Si0.41395Al0.01334O0.0044N0.56528. The phosphor powder exhibits a rod-like morphology with the length of ,4 mm and the diameter of ,0.5 mm. It can be excited efficiently over a broad spectral range between 280 and 480 nm, and has an emission peak at 535 nm with a full width at half maximum of 55 nm. It has a superior color chromaticity of x=0.32 and y=0.64. The internal and external quantum efficiencies of this phosphor is 70% and 61% at lex=303 nm, respectively. This newly developed green phosphor has potential applications in phosphor-converted white LEDs.

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Keyword: phosphor, oxynitride, LEDs, luminescence

Date published: 2005-05-23

Publisher: American Institute of Physics

Journal:

  • Applied Physics Letters (ISSN: 00036951) vol. 86 issue. 21 211905

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Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.1063/1.1935027

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Updated at: 2024-01-05 22:13:08 +0900

Published on MDR: 2023-04-28 10:19:13 +0900

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