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Luminescence properties and energy transfer of broadband NIR phosphor Li2MgZrO4: 1.0%Cr3+, y%Yb3.
Zheng, Shuang; Ma, Shukai; He, Shuai; Guan, Qian; Chao, Luomeng; Qiao, Jun; Ma, Yonghong.
Afiliação
  • Zheng S; School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China.
  • Ma S; School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China.
  • He S; School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China. Electronic address: heshuaii@sina.com.
  • Guan Q; School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China.
  • Chao L; School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China.
  • Qiao J; School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China.
  • Ma Y; School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China. Electronic address: myh_dlut@126.com.
Spectrochim Acta A Mol Biomol Spectrosc ; 314: 124200, 2024 Jun 05.
Article em En | MEDLINE | ID: mdl-38565048
ABSTRACT
The discovery of high thermal stability, broad-band near-infrared (NIR) fluorescent phosphors holds significant potential in applications such as non-destructive testing, promoting plant growth, and night vision devices. In this study, a novel broad-band NIR phosphors Li2MgZrO4 (LMZ) 1.0 %Cr3+, y%Yb3+ were synthesized via a high-temperature solid-state reaction method, with the optimal doping concentration found to be y = 1.5. These phosphors exhibited broad NIR emission in the range of 700-1050 nm by effective energy transfer from Cr3+ to Yb3+. The maximum full width at half maximum (FWHM) of the Cr3+/Yb3+ co-doped LMZ phosphor is 270 nm. The thermal stability of the phosphors was improved with Yb3+ co-doping. Additionally, energy transfer from Cr3+ to Yb3+ was confirmed through luminescence spectra and lifetime analysis. Finally, NIR pc-LED devices composed of a 460 nm ultraviolet chip and LMZ 1.0 %Cr3+, 1.5 %Yb3+ phosphors were fabricated, offering a highly promising source of invisible light. These results demonstrate the wide-ranging potential applications of this novel, high thermal stability, and ultra-broad NIR emitting fluorescent phosphor.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Assunto da revista: BIOLOGIA MOLECULAR Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Assunto da revista: BIOLOGIA MOLECULAR Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Reino Unido