Human-eyes-friendly white electroluminescence from solution-processable hybrid OLEDs exploiting new iridium (III) complex containing benzoimidazophenanthridine ligand
作者:Manojkumar Dhanthala Thiyagarajan、Umamahesh Balijapalli、Karolis Leitonas、Dmytro Volyniuk、Jurate Simokaitiene、Jonas Keruckas、Eglė Jatautienė、Madhvesh Pathak、Sathiyanarayanan Kulathu Iyer、Juozas Vidas Gražulevičius
DOI:10.1016/j.dyepig.2019.108068
日期:2020.3
This paper also deals with the development of white hybrid solution-processable organic light-emitting devices, exploiting ultralow concentration of newly synthesized iridium (III) complex as phosphorescent dopant in combination with blue fluorescencent emitter(host), and green emitter exhibiting thermally activated delayed fluorescence emitter. It was designed and fabricated by spin coating white hybrid
本文主要研究以苯并咪唑并菲为主要配体的高效磷光铱(III)配合物的开发。通过多种方法筛选了该络合物作为光电应用中的磷光发射体的潜力,包括发光光谱法,循环伏安法,热重分析法,差示扫描量热法以及光电子发射光谱法。证明了开发的配合物在显示暖橙色电磷光的单色真空沉积有机发光二极管(OLED)中的可能应用。该器件的特征是CIE1931的色坐标为(0.539,0.459),色温为2088 K,最大外部量子效率为17.5%。OLED的良好性能可以部分归因于有效的橙色磷光,其室温下的量子产率为60%。本文还研究了白色混合可溶液处理的有机发光器件的开发,该技术利用超低浓度的新合成铱(III)配合物作为磷光掺杂剂,并结合蓝色荧光体发射体(主体)和表现出热激活延迟的绿色发光体荧光发射器。它是通过旋涂白色混合器件设计和制造的,其特点是具有高质量(人眼友好)的电致发光,其CIE1931坐标为(0.335,0.392