循环极化有机发光二极管基于状孔运输体
Xiao-Sheng Zhong1, Li Yuan1, Xiang-Ji Liao1
1State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|January 25, 2024
概括
这项研究引入了新的循环极化有机发光二极管 (CP-OLEDs),使用形孔传输材料,而不是形发射器. 这种方法简化了合成,并使无线材料的有效循环极化电光发射 (CPEL) 成为可能.
科学领域:
- 有机电子学有机电子学
- 材料科学是一种材料科学.
- 光子学 是一个光子学.
背景情况:
- 循环偏振有机发光二极管 (CP-OLED) 对于3D显示器至关重要,因为它可以直接产生循环偏振电光 (CPEL).
- 用于CP-OLED的状发光材料提出了诸如复杂合成和反体分离等挑战.
研究的目的:
- 设计新型的CP-OLED,使用奇拉孔传输材料,而不是奇拉发射器.
- 通过使用形孔传输层,证明从形发光材料生成CPEL的可行性.
主要方法:
- 使用一对具有高不对称系数 (R/S-NPACZ) 的孔传输等离子体 (R/S-NPACZ) 制造CP-OLED.
- 整合R/S-NPACZ作为孔输送层与六种光和热激活延迟光 (TADF) 材料,在不同的波长发射.
主要成果:
- 使用赤色,绿色和蓝色 (III) 复合物的CP-OLED实现了高达30.7%的外部量子效率 (EQE) 和高达2.3×10−3.3的gEL光学系数.
- 使用紫色蓝色,蓝绿色和绿色TADF材料的CP-OLED显示EQEs高达25.4%,gEL光学系数高达3.6 × 10−3.3.
- 生成的CPEL光谱与阿基拉材料的辐射波长一致.
结论:
- 这项工作介绍了基于合孔输送材料的第一个CP-OLED,作为有机循环极化器.
- 开发的策略为CP-OLEDs提供了一种简化方法,使得CPEL可以从易于获得的无线发射器生成CPEL.
- 这一突破对推进3D显示技术和其他需要循环偏光的应用具有重大潜力.
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