Green light-excitable Ce-doped nitridomagnesoaluminate Sr[Mg2Al2N4] phosphor for white light-emitting diodes

Julius L. Leaño, Shin Ying Lin, Agata Lazarowska, Sebastian Mahlik, Marek Grinberg, Chaolun Liang, Wuzong Zhou, Maxim S. Molokeev, Victor V. Atuchin, Yi Ting Tsai, Chun Che Lin, Hwo Shuenn Sheu, Ru Shi Liu

研究成果: 雜誌貢獻文章同行評審

108 引文 斯高帕斯(Scopus)

摘要

A yellow-emitting Ce-doped Sr[Mg2Al2N4] phosphor was synthesized using all-nitride starting materials via gas pressure sintering (GPS). The phosphor is effectively excitable by green light (510 nm). Homogeneous and inhomogeneous broadening is responsible for appearance of broad luminescence that cover the spectral region from 500 to 700 nm with maximum emissions at 580 and 620 nm. Pressure-dependent luminescence results show the significant red shift of the luminescence and excitation bands and reveal the presence of additional pathway for nonradiative deactivation. The Sr0.985[Mg2Al2N4]:Ce0.0153+ phosphor retained ~65% of its intensity at 150°C. With a blue LED excitable pc-LED package, where it is coated on top of the β-SiAlON:Eu2+-coated blue LED chip and white light with CCT = 4595 K and Ra = 61 with 20 lm/W efficacy was generated. This Ce3+-doped phosphor demonstrates how it can substitute for the emission of two phosphors.
原文英語
頁(從 - 到)6822-6825
頁數4
期刊Chemistry of Materials
28
發行號19
DOIs
出版狀態已發佈 - 1月 1 2016
對外發佈

ASJC Scopus subject areas

  • 化學 (全部)
  • 化學工程 (全部)
  • 材料化學

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