利用超薄层实现混合白色有机发光二极管的同时高电解发光效率和颜色质量
Upasana Deori1, Vikash Kumar2, Parthasarathy Gandeepan2
1Materials Research Centre, Indian Institute of Science, Bangalore, Karnataka 560012, India.
ACS applied materials & interfaces
|January 29, 2026
概括
这项研究介绍了使用蓝色热激活延迟光 (TADF) 和色光的先进白色有机发光二极管 (WOLED). 新的设计实现了高效率和卓越的白色颜色质量,用于显示器和照明.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 光物理学的光学物理学
背景情况:
- 白色有机发光二极管 (WOLED) 对显示器和照明至关重要.
- 将光和热激活延迟光 (TADF) 发射器相结合,可提供高效率.
- 在WOLED中实现高性能和优秀的白色颜色质量仍然是一个挑战.
研究的目的:
- 开发具有高颜色质量的高效WOLED.
- 探索在单一发射层中使用蓝色TADF和色光体.
- 为了提高WOLED的性能和颜色质量,使用多层结构.
主要方法:
- 使用蓝色TADF发射器和色光体在单一发射层中制造WOLED.
- 通过调整度来调整白色光的颜色.
- 使用超薄绿色TADF发射器 (BPyDTC) 实现多层三明治配置.
主要成果:
- 单层WOLED实现了31.8%的最大外部量子效率 (EQE) 和56.8 lm W-1的功率效率 (PE).
- 多层WOLED的最大EQE为28.8%,PE为65.5 lm W-1.
- 多层设计产生了国际照明委员会 (CIE) 坐标为 (0.38,0.41) 的白光,并且在高亮度下保持了良好的性能.
结论:
- 结合蓝色TADF和色光是高效WOLED的有效策略.
- 具有额外绿色TADF发射器的多层结构可以进一步提高WOLED性能和颜色质量.
- 开发的WOLED显示器显示了先进显示和照明应用的巨大潜力.
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