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首页> 外文期刊>Optics Letters >Cr3+-doped Bi2Ga4O9-Bi2Al4O9 solid-solution phosphors: crystal-field modulation and lifetime-based temperature sensing
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Cr3+-doped Bi2Ga4O9-Bi2Al4O9 solid-solution phosphors: crystal-field modulation and lifetime-based temperature sensing

机译：CR3 + - 拆卸Bi2Ga4O9-Bi2Al4O9固溶体磷光体：晶体场调制和基于寿命的温度感测

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摘要

Cr3+-doped Bi2Ga4O9-Bi2Al4O9 solid-solution (SS) phosphors were fabricated to explore their possible application in fluorescence lifetime-based temperature sensing. The present samples exhibited E-2 -> (4)A(2) R-line emissions associated with T-4(2) -> (4)A(2) phonon sideband emissions of Cr3+ in the wavelength range of 600-850 nm upon the excitation of visible light. Through modifying the Al/Ga ratio in the SS hosts, the Cr3+ crystal field was easily tuned from intermediate to strong, being beneficial to modulate an energy gap between E-2 and T-4(2) thermally coupled emitting states. As a result, linearly temperature-sensitive fluorescence lifetime was achieved in the Cr3+-doped Bi2Ga4O9-Bi2Al4O9 SSs with a high Al/Ga ratio, enabling us to conveniently and accurately determine a temperature with a high relative sensitivity of 2.13-3.26% K-1. (C) 2017 Optical Society of America
机译：CR3 +掺杂的Bi2Ga4O9-Bi2Al4O9制备固溶体（SS）磷光体，以探讨它们在荧光寿命的温度传感中的应用。 本样品显示出与T-4（2） - >（4）A（2）个声子边带发射的e-2 - >（4）r线排放在600-850的波长范围内的CR3 + 在可见光的激发时纳米。 通过修改SS主机中的AL / GA比，CR3 +晶体场容易从中间转换为强，有利于调制E-2和T-4（2）热耦合发射状态之间的能隙。 结果，具有高Al / GA比的Cr3 + - 掺杂的Bi2Ga4O9-Bi2Al4O9 SSS中实现了线性温度敏感的荧光寿命，使我们能够方便且准确地确定具有2.13-3.26％K-的高相对敏感性的温度。 1。 （c）2017年光学学会

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  • 来源
    《Optics Letters》 |2017年第23期|共4页
  • 作者

    Chen Daqin; Chen Xiao; Li Xiaoyue; Guo Hai; Liu Shen; Li Xinyue;

  • 作者单位

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Normal Univ Dept Phys Jinhua 321004 Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 计量学;光学;
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