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两种新的红色发射三元欧 (III) 复合体具有高光发光量子产量和在OLED设备中的特殊性能

Rashid Ilmi¹, Xiaofang Li², Nawal K Al Rasbi¹

¹Department of Chemistry, Sultan Qaboos University, P. O. Box 36, Al Khod 123, Oman. rashidilmi@gmail.com.

Dalton transactions (Cambridge, England : 2003)

|August 29, 2023

概括

合成了两种新型欧有机复合物 (OEuC),显示出强烈的红色排放和高光发光量子产量. 这些OEuC通过优化设备工程,在红色有机发光二极管 (R-OLED) 中实现了卓越的性能.

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:

有机金属复合物,特别是那些涉及欧等化物的复合物,对于开发高效的发光器件至关重要.
开发用于有机发光二极管 (R-OLED) 的稳定和高性能红色发射器仍然是光电子领域的一个重大挑战.

研究的目的:

合成和描述两种新的欧基有机复合物 (OEuCs),以作为OLED中红色发射剂的潜在用途.
评估这些OEuC在R-OLED中集成后的光物理特性和设备性能.

主要方法:

合成和表征两个欧基复合物:[Eu(btfa) 3 ((Bathphen) ] (OEuC-1) 和[Eu(tta) 3 ((Bathphen) ] (OEuC-2). 这两种复合物分别为[Eu(btfa) 3 ((Bathphen) ] (OEuC-1) 和[Eu(tta) 3 ((Bathphen) ] (OEuC-2).
在固态中测量光发光量子产量 (PLQYs).
使用合成的OEuCs作为发射层中的剂制造和测试R-OLED,并仔细选择主体材料.

主要成果:

OEuC-1和OEuC-2都表现出强烈的红色排放,高固态PLQY为80%±10%.
基于OEuC-2的R-OLED实现了优异的性能指标:最大电流效率 (CEmax) 为9.91cd A-1,最大功率效率 (PEmax) 为9.15 lm W-1,最大外部量子效率 (EQEmax) 为6.24%.
该设备的亮度为545cdm−2与CIE坐标 (0.620,0.323) 在电流密度为10mA cm−2.2时.

结论:

合成的欧基有机复合物是高效的红色发射器,具有有前途的光物理特性.
基于OEuC-2的R-OLED表现出了卓越的性能,突出了这些复合体在先进的光电子应用中的潜力.
设备工程,包括主体材料选择,对于最大限度地提高R-OLED中欧基复合物的性能至关重要.

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