B,N-嵌入式异质体[9]向高效的循环极化电光发光
Wei-Chen Guo1,2, Wen-Long Zhao1,2, Ke-Ke Tan1,2
1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Angewandte Chemie (International ed. in English)
|February 21, 2024
概括
研究人员开发了新的和嵌入式螺旋体,用于高效的循环极化有机发光二极管 (CP-OLED). 这些材料实现了高的外部量子效率和电解发光不对称性,为先进的CPEL应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 摄影化学的使用.
背景情况:
- 由于其螺旋结构,烯对循环极化电光发射 (CPEL) 是有前途的.
- 现有的碳烯受外部量子效率 (EQE) 低的影响.
- 和 (BN) 的结合和多共振热激活延迟光 (MR-TADF) 改善了EQE,但产生了较低的电解发光不对称因子 (gEL).
研究的目的:
- 开发具有同时高EQE和gEL的新型BN嵌入式基因,以实现高效的CPEL.
- 为这些先进材料提供一种简单的合成方法.
主要方法:
- 合成B,N嵌入式异质[9]烯 (BN[9]H).
- 光发光 (PL) 属性的表征,包括发光不对称因子.
- 使用BN[9]H作为发射器制造和测试循环极化有机发光二极管 (CP-OLED) 设备.
主要成果:
- 由于MR-TADF和螺旋结构,BN[9]H在578nm处表现出明亮的光发光,高glum数为5.8×10-3,由于MR-TADF和螺旋结构.
- CP-OLED设备的最大EQE为35.5%,在半最大宽度 (48 nm) 时全宽度窄,高gELd>6.2×10-3.
- Q系数达到2.2×10−3,为烯类相应物报告的最高值.
结论:
- 这项研究提出了一种具有优越CPEL特性的新型BN嵌入式乙烯 (BN[9]H).
- 这项工作为更高的烯和先进的CPEL材料提供了新的合成途径.
- 这些发现为高效的循环极化有机发光二极管铺平了道路.
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