White Electroluminescence with Simultaneous Three-Color Emission from a Four-Armed Star-Shaped Single-Polymer System
作者:Yuanda Jiu、Jianyun Wang、Chengfang Liu、Wenyong Lai、Lingling Zhao、Xiangchun Li、Yi Jiang、Weidong Xu、Xinwen Zhang、Wei Huang
DOI:10.1002/cjoc.201500308
日期:2015.8
A four‐armed star‐shaped single‐polymer system with 4,7‐bis(5‐(4‐(9H‐carbazol‐9‐yl)phenyl)‐4‐hexylthiophen‐2‐yl)benzo[c][1,2,5]thiadiazole (FTBT) as a red emissive core, polyfluorene (PF) as blue emissive arms and 1,3‐benzo thiadiazole (BT) as green emissive dopants was designed and synthesized, in which red, green, and blue (RGB) emission balance can be achieved by adjusting the doping concentration
具有4,7-双(5-(4-(9 - H-咔唑-9-基)苯基)-4-己基噻吩-2-基)苯并[ c ] [1]的四臂星形单聚合物系统设计合成了,2,5]噻二唑(FTBT)为红色发射核,聚芴(PF)为蓝色发射臂和1,3-苯并噻二唑(BT)为绿色发射掺杂剂,其中红色,绿色和蓝色(RGB)发射平衡可以通过谨慎地调整FTBT和BT的掺杂浓度来实现。对典型的单发射层器件(ITO / PEDOT:PSS / polymer / TPBI / LiF / Al)进行了研究和讨论,实现了纯净稳定的白色发射,发光效率(LE)为1.59 cd·A -1和CIE坐标为(0.31、0.34)。器件的高质量白色电致发光主要归因于分子间的相互作用被抑制,以及部分能量从蓝色PF臂转移到红色和绿色掺杂剂。