Directional Luminescence Properties of Organic Thin Film Based on Bloch Surface Waves

YU Meng; LYU Ying; ZOU Deyue; GUO Xiaoyang; LIU Xingyuan

doi:10.37188/CJL.20230116

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Directional Luminescence Properties of Organic Thin Film Based on Bloch Surface Waves

Cover Story | 更新时间：2023-09-28

- Directional Luminescence Properties of Organic Thin Film Based on Bloch Surface Waves
  增强出版
- Chinese Journal of Luminescence Vol. 44, Issue 9, Pages: 1521-1526(2023)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所发光学及应用国家重点实验室，吉林长春　130033
  2.中国科学院大学，北京　100049
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(62035013;51973208)
- DOI：10.37188/CJL.20230116
  CLC： O734
- Published：05 September 2023，
  
  Received：28 April 2023，
  
  Revised：06 May 2023，
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于猛,吕营,邹德月等.基于布洛赫表面波的有机薄膜方向性发光性能[J].发光学报,2023,44(09):1521-1526.

YU Meng,LYU Ying,ZOU Deyue,et al.Directional Luminescence Properties of Organic Thin Film Based on Bloch Surface Waves[J].Chinese Journal of Luminescence,2023,44(09):1521-1526.
于猛,吕营,邹德月等.基于布洛赫表面波的有机薄膜方向性发光性能[J].发光学报,2023,44(09):1521-1526. DOI： 10.37188/CJL.20230116.

YU Meng,LYU Ying,ZOU Deyue,et al.Directional Luminescence Properties of Organic Thin Film Based on Bloch Surface Waves[J].Chinese Journal of Luminescence,2023,44(09):1521-1526. DOI： 10.37188/CJL.20230116.

摘要

布洛赫表面波（BSW）是光场局域在光子晶体表面层并沿着表面传播的一种电磁模式。本文在一维光子晶体上制备了PS∶C545T有机发光层，观察到了有机小分子C545T的激子耦合进BSW模式的荧光。通过对半球透镜耦合输出光斑的发光性能研究，分析比较了C545T的常规发光和BSW模式发光的不同特点。结果表明，BSW模式耦合输出环形的光斑，其荧光具有很窄的空间分布、线偏振和光谱角度可调的特性，并与常规辐射模式的光斑明显分离。一维光子晶体上的发光薄膜的辐射跃迁速率存在各向异性的现象，其中BSW模式的荧光具有更快的辐射跃迁速率。利用BSW的上述发光特点有助于开发具有一定方向性的偏振发光器件。

Abstract

Bloch surface wave （BSW） is an electromagnetic mode in which the light field is localized in the surface layer and propagates along the surface layer of the photonic crystal. In this paper， a PS∶C545T organic luminescence layer was prepared on a one-dimensional photonic crystal， and the fluorescence of the exciton of organic C545T molecules coupled into the BSW mode was observed. By studying the performance of the output light emission of the sample through the hemispherical lens coupling， different characteristics of the conventional luminescence and the BSW mode luminescence of C545T are analyzed and compared. The results show that the coupled BSW mode outputs a ring light spot， which has the characteristics of narrow spatial distribution， linear polarization and adjustable spectral with angle， and is obviously separated from the light spot of the conventional radiation mode. The radiation transition rate of luminous films on one-dimensional photonic crystals is anisotropic， and the BSW mode fluorescence has a faster radiation transition rate. The above luminescence characteristics of BSW mode can be utilized to develop polarized light-emitting devices with certain directivity.

关键词

布洛赫表面波有机材料偏振角分布一维光子晶体

Keywords

Bloch surface waveorganic materialspolarizationangular distributionone-dimensional photonic crystal

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