碳醇化合物作为有机发光二极管中的三重发射器的主体材料:高效发光二极管的聚合物主体
Addy van Dijken1, Jolanda J A M Bastiaansen, Nicole M M Kiggen
1Philips Research, Prof. Holstlaan 4, 5656 AA Eindhoven, The Netherlands.
Journal of the American Chemical Society
|June 17, 2004
概括
为聚合物发光二极管合成了新的碳醇聚合物. 定制建筑块连接增强了三重能量和改进的充电注入,从而导致更高效的设备.
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.
- 聚合物化学 聚合物化学
背景情况:
- 聚9-乙烯基碳醇 (PVK) 是聚合物发光二极管 (PLED) 中常见的宿主材料,但具有显著的孔注射屏障.
- 开发具有改进的电气和光物理性能的新型宿主材料对于提高PLED性能至关重要.
研究的目的:
- 合成和表征新型碳醇同聚合物和共聚合物,用于光PLED中作为宿主.
- 研究聚合物架构对三重能量和电荷注入特性的影响.
- 为了评估这些新材料在功能性PLED设备中的性能.
主要方法:
- 合成含有特定构件的碳醇同聚合物和共聚合物 (例如,氧沙,衍生物).
- 光物理性质的表征,包括三重能量水平.
- 电气特征,重点关注HOMO级别和充电注入障碍.
- 使用碳醇-氧化共聚合物主体的双层PLED设备的制造和测试.
主要成果:
- 聚合物三重组的能量可以通过改变构成块的连接而改变组合而调整 (2.32.6 eV).
- 与PVK相比,碳醇共聚合物显示HOMO水平显著降低,促进了更好的充电注入.
- 一个带有碳醇-氧化共聚合物宿主的PLED设备实现了23cd/A的高效率,而不依赖电流密度.
结论:
- 碳醇聚合物中的构建块的特定排列极大地影响了它们的三倍能量.
- 新型碳醇共聚合物提供了改进的充电注入特性,使得在较低电压下具有更高的亮度.
- 这些材料显示出作为光聚合物发光二极管的高效宿主材料的巨大潜力.
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