有效的窄带黄色有机发光二极管基于 (III) 复合体,其刚性是indolo[3,2,1-jk]碳醇单元
Qi-Ming Liu1, Xiao-Jia Liu1, Xiao-Sheng Zhong1
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. yxzheng@nju.edu.cn.
Dalton transactions (Cambridge, England : 2003)
|July 8, 2024
概括
具有刚性配体的新型 (III) 复合物使得有机发光二极管 (OLED) 能够产生高效的有机发光二极管 (OLED) 具有狭窄的发光. 这些光材料是推动宽色域OLED显示器发展的关键.
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:
- 光材料的窄带辐射对于实现宽色域有机发光二极管 (OLED) 非常重要.
- (III) 复合物因其在OLED中作为高效发射体的潜力而受到广泛研究.
研究的目的:
- 合成和表征两个新型的 (III) 复合物, (PhthzICz) 2Ir ((tmd) 和 (thzICz) 2Ir ((tmd),以在OLED中潜在使用.
- 为了研究这些新复杂的光发光特性和OLED性能.
主要方法:
- 使用刚性循环金属化连接物 (PhthzICz和thzICz) 和辅助连接物 (tmd) 合成 (III) 复合物.
- 将复合物化为一个宿主物质 (3,3'-di(9H-carbazol-9-yl) -1,1'-biphenyl).
- 光发光 (PL) 属性的表征,包括排放峰值,半最大全宽度 (FWHM) 和量子产量.
- 组合合成发射器的OLED设备的制造和测试.
主要成果:
- 合成的 (III) 复合物表现出具有高量子产量的黄色光发光 (89.9%和85.9%).
- 片显示了537nm和531nm的排放峰值,FWHM值为35nm和60nm.
- OLED设备的最大外部量子效率为25.2%和22.7%.
- 一个设备实现了显著狭窄的FWHM31nm.
结论:
- 将刚性群组纳入循环金属联体是一种有效的策略,用于开发OLED的高效 (III) 复合物.
- 合成的复合体显示出在OLED应用中实现狭窄的排放和高效率的前景.
- 这些发现有助于推进具有广泛颜色范围的OLED技术.
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