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首页> 外文期刊>RSC Advances >Thermally stable La2LiSbO6:Mn4+,Mg2+ far-red emitting phosphors with over 90% internal quantum efficiency for plant growth LEDs
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Thermally stable La2LiSbO6:Mn4+,Mg2+ far-red emitting phosphors with over 90% internal quantum efficiency for plant growth LEDs

机译：热稳定LA2LISBO6：MN4 +，MG2 +远红色发射磷光体，用于植物生长LED的内部量子效率超过90％

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摘要

In this paper, we reported on the high-efficiency and thermally-stable La2LiSbO6:Mn4+,Mg2+ (LLS:Mn4+,Mg2+) far-red emitting phosphors. Under 338 nm excitation, the composition-optimized LLS:0.3%Mn4+,1.6%Mg2+ phosphors which were made up of [SbO6], [LiO6], and [LaO8] polyhedrons, showed intense far-red emissions peaking at 712 nm (E-2(g) (4)A(2g) transition) with internal quantum efficiency as high as 92%. The LLS:0.3%Mn4+,1.6%Mg2+ phosphors also exhibited high thermal stability, and the emission intensity at 423 K only reduced by 42% compared with its initial value at 303 K. The far-red light-emitting device has also been made by using the LLS:0.3%Mn4+,1.6%Mg2+ phosphors and a 365 nm emitting InGaN chip, which can emit far-red light that is visible to the naked eye. Importantly, the emission spectrum of the LLS:0.3%Mn4+,1.6%Mg2+ phosphors can match well with the absorption spectrum of phytochrome P-FR, indicating the potential of these phosphors to be used in plant growth light-emitting diodes.
机译：在本文中，我们报道了高效和热稳定的LA2LISBO6：Mn4 +，Mg2 +（LLS：MN4 +，MG2 +）远方发射磷光体。在338nm激发下，组合优化的L10：0.3％Mn4 +，由[SbO6]，[LiO6]和[LaO8]多面体组成的1.6％Mg2 +磷光体，显示出在712 nm（例如-2（g）（4）A（2g）过渡），内量子效率高达92％。 LLS：0.3％MN4 +，1.6％Mg2 +磷光体也表现出高的热稳定性，并且423 k下的发射强度与其初始值相比仅在303k时降低了42％。还已经制造了远红发光装置通过使用LLS：0.3％Mn4 +，1.6％Mg2 +磷光体和365nm发射InGaN芯片，可以发出肉眼可见的远红光。重要的是，LLS的发射光谱：0.3％MN4 +，1.6％Mg2 +磷光体可以利用植物色度P-FR的吸收光谱匹配，表明这些磷光体的潜力用于植物生长发光二极管。

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  • 来源
    《RSC Advances》 |2018年第56期|共8页
  • 作者

    Sun Liangling; Devakumar Balaji; Liang Jia; Li Bin; Wang Shaoying; Sun Qi; Guo Heng; Huang Xiaoyong;

  • 作者单位

    Taiyuan Univ Technol Coll Phys &

    Optoelect Minist Educ &

    Shanxi Prov Key Lab Adv Transducers &

    Intelligent Control Sys Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Coll Phys &

    Optoelect Minist Educ &

    Shanxi Prov Key Lab Adv Transducers &

    Intelligent Control Sys Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Coll Phys &

    Optoelect Minist Educ &

    Shanxi Prov Key Lab Adv Transducers &

    Intelligent Control Sys Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Coll Phys &

    Optoelect Minist Educ &

    Shanxi Prov Key Lab Adv Transducers &

    Intelligent Control Sys Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Coll Phys &

    Optoelect Minist Educ &

    Shanxi Prov Key Lab Adv Transducers &

    Intelligent Control Sys Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Coll Phys &

    Optoelect Minist Educ &

    Shanxi Prov Key Lab Adv Transducers &

    Intelligent Control Sys Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Coll Phys &

    Optoelect Minist Educ &

    Shanxi Prov Key Lab Adv Transducers &

    Intelligent Control Sys Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Coll Phys &

    Optoelect Minist Educ &

    Shanxi Prov Key Lab Adv Transducers &

    Intelligent Control Sys Taiyuan 030024 Shanxi Peoples R China;

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