Strong Yellow-Green Luminescence in Delafossite-Type CuLaO2 Doped with Calcium or Strontium
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概要
- 論文の詳細を見る
Single-phase delafossite-type CuMxLa1-xO2 ($\textit{M}=\text{Ca}$, Sr) samples were synthesized by heating a mixed powder of binary oxides at 1273 K in an argon flow, and their luminescence properties were investigated. CuMxLa1-xO2 ($\textit{M}=\text{Ca}$, Sr) samples exhibited a strong yellow-green photoluminescence-emission band at room temperature. The emission intensities of CuCaxLa1-xO2 ($x=0.005$) and CuSrxLa1-xO2 ($x=0.005$ and 0.01) became approximately one order of magnitude higher than that of undoped CuLaO2. Their emission peaks shifted slightly to a shorter wavelength than that of CuLaO2. The emission spectra at 77 K were also measured. The increase in the emission intensity in CuMxLa1-x O2 ($\textit{M}=\text{Ca}$, Sr) is considered to be due to the formation of a new emission center upon doping Ca or Sr. Cu(M, La)O2 ($\textit{M}=\text{Ca}$, Sr) is a promising candidate for flat-display device application.
- Japan Society of Applied Physicsの論文
- 2007-06-25
著者
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Matsushita Hiroaki
Department Of Electrical Engineering Faculty Of Engineering Science University Of Tokyo
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Katsui Akinori
Department Of Material Engineering School Of High-technology For Human Welfare Tokai University
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Matsushita Hiroaki
Department of Information and Communication Technology, School of High-Technology for Human Welfare, Tokai University, Numazu, Shizuoka 410-0318, Japan
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Takahashi Yuhsuke
Department of Materials Chemistry, School of High-Technology for Human Welfare, Tokai University, Numazu, Shizuoka 410-0318, Japan
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Katsui Akinori
Department of Materials Chemistry, School of High-Technology for Human Welfare, Tokai University, Numazu, Shizuoka 410-0318, Japan
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