Color tone tuning by partial Sr2+ substitution of Ba 2+ in the white phosphors Ba1-y Sry La 2-x Dyx ZnO5 (x=0.01-0.2, y=0-0.65)

Chih Hao Liang, Xiao-Ding Qi, Yee Shin Chang

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

Ba1-y Sry La2-x Dyx ZnO 5 (x=0.01-0.2, y=0-0.65) phosphors were prepared by a solid-state reaction, and their photoluminescence properties were investigated for the conversion of the UV light emitting diode radiation to white light. The results showed that the maximum emission intensity of the samples without Sr 2+ substitution was achieved at the Dy3+ doping level x=0.07 under the UV excitation at 388 nm, and the Commission Internationale del'Eclairage (CIE) chromaticity coordinate of the total emissions was located at (0.256, 0.334). When substituted by Sr2+, the X-ray diffraction showed that the lattice constants and unit cell volumes of Ba1-y Sry La1.93 Dy0.07 ZnO5 (y=0-0.65) decreased linearly with the increasing Sr2+ content. The color tone of the Ba1-y Sry La1.93 Dy0.07 ZnO5 phosphors could be tuned by the amount of Sr2+ substitution as the consequence of the induced lattice distortion, which resulted in a change in the local site symmetry around the Dy3+ ions. The CIE chromaticity coordinate (x,y) of Ba1-y Sry La1.93 Dy0.07 ZnO5 phosphors varied from bluish white (0.256, 0.334) at y=0 to near white (0.315, 0.370) at y=0.65 under the UV excitation at 388 nm.

原文English
期刊Journal of the Electrochemical Society
157
發行號5
DOIs
出版狀態Published - 2010 4月 27

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 可再生能源、永續發展與環境
  • 表面、塗料和薄膜
  • 電化學
  • 材料化學

指紋

深入研究「Color tone tuning by partial Sr2+ substitution of Ba 2+ in the white phosphors Ba1-y Sry La 2-x Dyx ZnO5 (x=0.01-0.2, y=0-0.65)」主題。共同形成了獨特的指紋。

引用此