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首页> 外文期刊>RSC Advances >Room-temperature synthesis of near-ultraviolet light-excited Tb3+-doped NaBiF4 green-emitting nanoparticles for solid-state lighting
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Room-temperature synthesis of near-ultraviolet light-excited Tb3+-doped NaBiF4 green-emitting nanoparticles for solid-state lighting

机译：室温合成近紫外线光激发TB3 + - 用于固态照明的Nabif4绿色发射纳米粒子

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摘要

We reported a facile reaction technique to prepare Tb3+-doped NaBiF4 green-emitting nanoparticles at room temperature. Under 378 nm excitation, the prepared samples exhibited the featured emissions of Tb3+ ions and the green emission located at 543 nm corresponding to the D-5(0) - F-7(4) transition was observed in the photoluminescence (PL) emission spectra. The PL emission intensity relied on the dopant concentration and its optimum value was determined to be 50 mol%. The involved concentration quenching mechanism was dominated by the electric dipole-dipole interaction and the critical distance was evaluated to be around 10.4 angstrom. Meanwhile, the color coordinate and color purity of the obtained emission were revealed to be (0.328, 0.580) and 62.4%, respectively. The thermal quenching performance of the synthesized nanoparticles was analyzed using the temperature-dependent PL emission spectra and the activation energy was calculated to be 0.39 eV. By integrating a near-ultraviolet chip with the prepared nanoparticles, a dazzling green light-emitting diode was fabricated to explore the feasibility of the Tb3+-doped NaBiF4 nanoparticles for solid-state lighting applications.
机译：我们报道了一种容易反应技术，在室温下制备Tb3 +掺杂的Nabif4绿色发射纳米颗粒。在378mm激发下，制备的样品表现出Tb3 +离子的特征排放，以及位于543nm的绿色发射，对应于D-5（0） - ＆在光致发光（PL）发射光谱中观察到F-7（4）转变。 PL发射强度依赖于掺杂剂浓度，并且其最佳值确定为50摩尔％。所涉及的浓度猝灭机制由电偶极 - 偶极相互作用主导，评价临界距离约为10.4埃。同时，所获得的发射的颜色坐标和颜色纯度分别为（0.328,0.580）和62.4％。使用温度依赖性的PL发射光谱分析合成纳米颗粒的热猝灭性能，并将活化能量计算为0.39eV。通过将近紫外线芯片与制备的纳米颗粒集成，制造了一种令人眼花缭乱的绿色发光二极管，以探讨Tb3 +掺杂的Nabif4纳米粒子用于固态照明应用的可行性。

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  • 来源
    《RSC Advances》 |2018年第47期|共6页
  • 作者

    Du Peng; Hua Yongbin; Yu Jae Su;

  • 作者单位

    Kyung Hee Univ Dept Elect Engn Yongin 17104 Gyeonggi Do South Korea;

    Kyung Hee Univ Dept Elect Engn Yongin 17104 Gyeonggi Do South Korea;

    Kyung Hee Univ Dept Elect Engn Yongin 17104 Gyeonggi Do South Korea;

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  • 正文语种 eng
  • 中图分类 化学;
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