来自 perfluoro carbonyl 替代的复合物的深蓝色光
Sunghun Lee1, Seul-Ong Kim, Hyun Shin
1WCU Hybrid Materials Program, Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University , Seoul 151-744, South Korea.
Journal of the American Chemical Society
|September 4, 2013
概括
为有机发光二极管 (OLED) 合成了新的深蓝色 (III) 复合物. 这些复合体表现出高光发光量子产量和深蓝色辐射,在光OLED中实现高外部量子效率.
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:
- 有机发光二极管 (OLED) 需要高效和稳定的发射器来实现先进的显示和照明应用.
- 深蓝色光发射器仍然是一个挑战,因为效率滚动和颜色纯度问题.
研究的目的:
- 为了合成和描述用于深蓝色光OLED的新型 (III) 复合物.
- 调查影响这些复合物的光物理和电发光性质的结构性质关系.
主要方法:
- 合成和表征四个新的 (((III) 复合物与化烯和辅助配体.
- 密度函数理论 (DFT) 和时间依赖的DFT (TD-DFT) 计算,以了解电子结构和兴奋状态.
- 用合成复合物的光OLED设备的制造和测试.
主要成果:
- 合成的 (III) 复合物表现出宽带间隙,这是由于吸收电子的高碳基团造成的.
- TD-DFT计算证实了占主导地位的HOMO-LUMO转换和重要的金属到合金电荷转移 (MLCT) 贡献.
- (TF) 2Ir(pic) 综合体实现了最高的光发光量子产量 (74 ± 3%) 和OLED外部量子效率 (17.1%),具有深蓝色发射 (CIE坐标为 (0.141,0.158)).
结论:
- 开发的 (III) 复合物对高性能深蓝色光OLED非常有希望.
- perfluoro 碳基组和特定的连接体设计的结合有效调整电子属性,以实现高效的蓝色发射.
- 实现了高外部量子效率的深蓝色辐射,代表了OLED技术的重大进步.
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