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説明:

Cr3+-activated near-infrared emitting phosphor has a potential application in plant growth and sensing technologies. Herein, we synthesized near-infrared emitting La11x/3Al11x1yTixO3:yCr3+ phosphor by a solid-state reaction. La11x/3Al11x1yTixO3:yCr3+ (x = 0.2, y = 0.003) showed the near-infrared emission at 751 nm with a full width at half-maximum of 41 nm under 351 nm excitation. The internal and external quantum efficiencies were 54.4 and 25.5 %, respectively. The luminescence intensities at 150 °C of the La11x/3Al11x1yTixO3:yCr3+ (x = 0.1, 0.2, and 0.3, y = 0.003) were 32, 17, and 3 % of those at room temperature, respectively. The thermal quenching effect strongly occurred with increasing the amount of Ti and it was related to the change in the absorbance edge of the host material La11x/3Al11x1yTixO3.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Cr3+-activated phosphor, Near-infrared emission, Oxide, Solid state reaction

刊行年月日: 2026-03-01

出版者: National Institute for Materials Science

掲載誌:

• Journal of the Ceramic Society of Japan (ISSN: 13486535) vol. 134 issue. 3 p. 128-132 25160

研究助成金:

• ATLA JPJ004596

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.2109/jcersj2.25160

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更新時刻: 2026-06-16 11:29:50 +0900

MDRでの公開時刻: 2026-06-16 12:26:20 +0900