中国物理B ›› 2025, Vol. 34 ›› Issue (8): 87502-087502.doi: 10.1088/1674-1056/add506

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Wideband near-infrared emission from GaScO3:Cr3+ phosphors with a perovskite structure

Chong Li(李翀)1, Mengyu Zhang(张梦宇)1, Chuancheng Zhang(张传成)1, Wenzhi Su(宿文志)1, Yong Zou(邹勇)1, Shoujun Ding(丁守军)1,2,†, and Qingli Zhang(张庆礼)3   

  1. 1 School of Microelectronics and Data Science, Anhui University of Technology, Maanshan 243002, China;
    2 Anhui Provincial Joint Key Laboratory of Disciplines for Industrial Big Data Analysis and Intelligent Decision, Maanshan 243002, China;
    2 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • 收稿日期:2025-03-21 修回日期:2025-04-28 接受日期:2025-05-07 出版日期:2025-07-17 发布日期:2025-08-05
  • 通讯作者: Shoujun Ding E-mail:sjding@ahut.edu.cn
  • 基金资助:
    Project supported by the Natural Science Research Project of Anhui Provincial Education Department for Excellent Young Scholars (Grant No. 2024AH030007) and the National Natural Science Foundation of China (Grant No. 52202001).

Wideband near-infrared emission from GaScO3:Cr3+ phosphors with a perovskite structure

Chong Li(李翀)1, Mengyu Zhang(张梦宇)1, Chuancheng Zhang(张传成)1, Wenzhi Su(宿文志)1, Yong Zou(邹勇)1, Shoujun Ding(丁守军)1,2,†, and Qingli Zhang(张庆礼)3   

  1. 1 School of Microelectronics and Data Science, Anhui University of Technology, Maanshan 243002, China;
    2 Anhui Provincial Joint Key Laboratory of Disciplines for Industrial Big Data Analysis and Intelligent Decision, Maanshan 243002, China;
    2 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • Received:2025-03-21 Revised:2025-04-28 Accepted:2025-05-07 Online:2025-07-17 Published:2025-08-05
  • Contact: Shoujun Ding E-mail:sjding@ahut.edu.cn
  • Supported by:
    Project supported by the Natural Science Research Project of Anhui Provincial Education Department for Excellent Young Scholars (Grant No. 2024AH030007) and the National Natural Science Foundation of China (Grant No. 52202001).

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摘要： Cr$^{3+}$-activated phosphors have attracted significant attention for their tunable emission, spanning narrow-band red to broadband near-infrared (NIR) luminescence, depending on the crystal field environment. Here, we report the realization of wideband NIR emission in Cr$^{3+}$-doped GaScO$_{3}$ (GaScO$_{3}$:Cr$^{3+}$) phosphors with perovskite structure. The phosphors were synthesized by traditional solid-state reaction method. The first-principles calculations were conducted and the results demonstrate that the octahedral [GaO$_6$] sites exhibit relatively weak crystal field strength ($Dq/B\approx 2.2$), facilitating efficient spin-allowed transitions of Cr$^{3+}$ from the $^{4}$T$_{2}$ state to the $^{4}$A$_{2}$ state. The photoluminescence spectroscopy revealed an exceptionally broad NIR emission band from a range of 700 nm-1200 nm with full width at half maximum (FWHM) of 145 nm under 465-nm excitation. Overall, these results highlight the viability of GaScO$_{3}$:Cr$^{3+}$ as a highly promising material for wideband NIR applications.

关键词: GaScO$_{3}$, perovskite phosphors, Cr$^{3+}$-doped, near-infrared emission, density functional theory

Abstract: Cr$^{3+}$-activated phosphors have attracted significant attention for their tunable emission, spanning narrow-band red to broadband near-infrared (NIR) luminescence, depending on the crystal field environment. Here, we report the realization of wideband NIR emission in Cr$^{3+}$-doped GaScO$_{3}$ (GaScO$_{3}$:Cr$^{3+}$) phosphors with perovskite structure. The phosphors were synthesized by traditional solid-state reaction method. The first-principles calculations were conducted and the results demonstrate that the octahedral [GaO$_6$] sites exhibit relatively weak crystal field strength ($Dq/B\approx 2.2$), facilitating efficient spin-allowed transitions of Cr$^{3+}$ from the $^{4}$T$_{2}$ state to the $^{4}$A$_{2}$ state. The photoluminescence spectroscopy revealed an exceptionally broad NIR emission band from a range of 700 nm-1200 nm with full width at half maximum (FWHM) of 145 nm under 465-nm excitation. Overall, these results highlight the viability of GaScO$_{3}$:Cr$^{3+}$ as a highly promising material for wideband NIR applications.

Key words: GaScO$_{3}$, perovskite phosphors, Cr$^{3+}$-doped, near-infrared emission, density functional theory

中图分类号:  (Metals and alloys)

  • 75.20.En
61.72.-y (Defects and impurities in crystals; microstructure) 76.30.Fc (Iron group (3d) ions and impurities (Ti-Cu)) 78.55.-m (Photoluminescence, properties and materials) 71.15.Mb (Density functional theory, local density approximation, gradient and other corrections)