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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Excitonic Luminescence Engineering in Tervalent-Europium-Doped Cesium Lead Halide Perovskite Nanocrystals and Their Temperature-Dependent Energy Transfer Emission Properties
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Excitonic Luminescence Engineering in Tervalent-Europium-Doped Cesium Lead Halide Perovskite Nanocrystals and Their Temperature-Dependent Energy Transfer Emission Properties

机译：铕掺杂铯铅卤化物钙钛矿纳米晶体的激子发光工程及其温度依赖能量转移性能

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摘要

Cesium lead halide (CsPbX3 (X = Cl, Br, I)) perovskite nanocrystals (NCs) have shown excellent prospects in lighting, display, and lasing fields owing to their excellent photoluminescence (PL) properties. To dope rare earth ions into halide perovskite, CsPbX3 (X = Cl, Br, I) NC hosts not only inherit the excellent narrow linewidth excitonic properties but also yield unique photoluminescence emission. Herein, engineering of such excitonic luminescence is achieved for Eu3+-doped CsPbCl3-xBrx (x = 0, 1, 1.5, 2, 3) solid solution NCs for the first time. The singly doped NCs present wide color gamut emission covering the whole visible spectrum. The blue to-green range (400-520 nm) emission is covered by tunable excitonic photoluminescence of CsPbX3 NCs. Besides, there is a broad red spectral region (590-700 nm) originating from the emission of the tervalent europium ions in NCs. Meanwhile, a noticeable spin-polarized D-5(0) - F-7(1-6) emission of Eu3+ ions is obtained owing to energy transfer from excitons to dopants. Moreover, the energy transfer is temperature-dependent, which originates from the increase of nonradiative transition probability, leading to the decrease of the PL intensity of NC hosts and the increase of the PL intensity of dopants.
机译：铯铅卤化物（CsPbX3（X =氯，溴，I））的钙钛矿纳米晶体（NCS）已经显示在照明，显示优异的前景，和激射字段由于其优异的光致发光（PL）的性质。掺杂稀土离子进入卤化物钙钛矿，CsPbX3（X =氯，溴，I）NC主机不仅继承了优异的窄线宽激子性能，而且产生独特的光致发光发射。在本文中，这样的激子发光的工程为Eu3 +的实现掺杂CsPbCl3-xBrx（X = 0，1，1.5％，2，3）的固溶体的NC首次。的单掺杂的NC呈现覆盖整个可见光谱的宽色域发射。蓝色至绿色范围（400-520纳米）发射被CsPbX3 NC的可调谐激子的光致发光所覆盖。此外，还有从在所述的NC三价铕离子的发射的宽红色光谱区（590-700纳米）始发。同时，明显的自旋极化d-5（0） - ＆GT; F-7（1-6）Eu3 +的离子的发射，获得由于从激子能量传递到掺杂剂。另外，能量传递是温度依赖性的，它从非发射跃迁概率的增加起源，导致NC主机的PL强度的降低和掺杂剂的PL强度的增加。

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    Li Qianqian; Liu Yufeng; Chen Peng; Hou Jingshan; Sun Yan; Zhao Guoying; Zhang Na; Zou Jun; Xu Jiayue; Fang Yongzheng; Dai Ning;

  • 作者单位

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Chinese Acad Sci Shanghai Inst Tech Phys Natl Lab Infrared Phys Shanghai 200083 Peoples R China;

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Shanghai Inst Technol Sch Mat Sci &

    Engn Shanghai 200235 Peoples R China;

    Chinese Acad Sci Shanghai Inst Tech Phys Natl Lab Infrared Phys Shanghai 200083 Peoples R China;

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  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;
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