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首页> 外文期刊>Organic Electronics >Realizing improved performance of down-conversion white organic light-emitting diodes by localized surface plasmon resonance effect of Ag nanoparticles
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Realizing improved performance of down-conversion white organic light-emitting diodes by localized surface plasmon resonance effect of Ag nanoparticles

机译:通过Ag纳米粒子的局部表面等离子体激元共振效应实现下转换的白色有机发光二极管的性能改善

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摘要

Down-conversion structure white organic light-emitting diodes (WOLEDs), in which white light is generated by a blue emission organic light-emitting diodes (OLEDs) in combination with a color conversion layer (CCL) outside the substrate, has attracted extensive interest due to its significant advantages in low cost and stabilized white-light emissions. However, low color-conversion efficiency of CCL is still a bottleneck for the performance improvement of down-conversion WOLEDs. Here, we demonstrate an approach to enhance the color-conversion efficiency of CCL-WOLEDs by localized surface plasmon resonance (LSPR) effect. In this approach, a blend of Ag nanoparticles and polyvinyl alcohol (PVA) is solution-deposited between the blue organic light emitting diodes and color-conversion layer. Based on the LSPR effect of this modified structure, the color conversion efficiency has improved 32%, from 45.4% to 60%, resulting a 14.4% enhancement of the current efficiency, from 9.73 cd/A to 11.14 cd/A. Our work provides a simple and low-cost way to enhance the performance of down-conversion WOLEDs, which highlights its potential in illumination applications.
机译:下转换结构的白色有机发光二极管(WOLED),其中由蓝光发射有机发光二极管(OLED)与基板外部的颜色转换层(CCL)结合产生白光,引起了广泛的关注由于其在低成本和稳定的白光发射方面的显着优势。然而,CCL的低颜色转换效率仍然是下转换WOLED的性能改善的瓶颈。在这里,我们演示了一种通过局部表面等离子体共振(LSPR)效应来增强CCL-WOLED的颜色转换效率的方法。在这种方法中,将Ag纳米颗粒和聚乙烯醇(PVA)的混合物沉积在蓝色有机发光二极管和颜色转换层之间。基于此修改结构的LSPR效果,颜色转换效率从45.4%提高到60%,提高了32%,电流效率从9.73 cd / A提高到11.14 cd / A,提高了14.4%。我们的工作提供了一种简单且低成本的方法来增强下转换WOLED的性能,这凸显了其在照明应用中的潜力。

著录项

  • 来源
    《Organic Electronics》 |2016年第4期|234-239|共6页
  • 作者单位

    School of Physics, Northwestern University, Xi'an, 710069, China,Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shanxi Key Lab of Information Photonic Technique, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, China;

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shanxi Key Lab of Information Photonic Technique, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, China;

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shanxi Key Lab of Information Photonic Technique, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, China;

    College of Science, Shaanxi University of Science and Technology, Xi'an, 710021, China;

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shanxi Key Lab of Information Photonic Technique, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, China;

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shanxi Key Lab of Information Photonic Technique, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, China;

    School of Physics, Northwestern University, Xi'an, 710069, China;

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shanxi Key Lab of Information Photonic Technique, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    White organic light-emitting diodes; Down-conversion; Localized surface plasmon resonance; Ag nanoparticles;

    机译:白色有机发光二极管;下转换;局部表面等离子体共振;银纳米粒子;

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