A New Red-Emitting Phosphor,SrTiO3:Pr〔3+〕,for Low-Voltage Electron Excitation

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  • Itoh Shigeo
    Research and Development Center, Futaba Corporation, 1080, Yabutsuka, Chosei, Chiba 299–4395, Japan
  • Toki Hitoshi
    Research and Development Center, Futaba Corporation, 1080, Yabutsuka, Chosei, Chiba 299–4395, Japan
  • Tamura Kiyoshi
    Research and Development Center, Futaba Corporation, 1080, Yabutsuka, Chosei, Chiba 299–4395, Japan
  • Kataoka Fumiaki
    Research and Development Center, Futaba Corporation, 1080, Yabutsuka, Chosei, Chiba 299–4395, Japan

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タイトル別名
  • A New Red-Emitting Phosphor, SrTiO3:Pr3+, for Low-Voltage Electron Excitation.
  • New Red-Emitting Phosphor SrTiO3 Pr 3 for Low-Voltage Electron Excitation
  • A New Red-Emitting Phosphor, SrTiO<sub>3</sub>:Pr<sup>3+</sup>, for Low-Voltage Electron Excitation

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A new red phosphor, SrTiO3:Pr3+, was developed for vacuum fluorescent displays (VFDs) and field emission displays (FEDs). It was discovered that the addition of Al is essential to achieve a high luminous efficiency of low-voltage cathodoluminescence and photoluminescence. The mechanism underlying the improvement of the luminous efficiency by the addition of Al is discussed. With the addition of 17 mol% Al, luminance of 800 cd/m2 was obtained at the anode voltage of 50 V. Powder X-ray diffraction and Auger analysis showed that the Al ions react with the Sr ions to form SrAl12O19.

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