TY - JOUR
T1 - Polyphenylbenzene as a platform for deep-blue OLEDs
T2 - Aggregation enhanced emission and high external quantum efficiency of 3.98%
AU - Zhan, Xuejun
AU - Sun, Ning
AU - Wu, Zhongbin
AU - Tu, Jin
AU - Yuan, Lei
AU - Tang, Xi
AU - Xie, Yujun
AU - Peng, Qian
AU - Dong, Yongqiang
AU - Li, Qianqian
AU - Ma, Dongge
AU - Li, Zhen
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/3/10
Y1 - 2015/3/10
N2 - Great efforts have been devoted to seek novel approaches for the construction of efficient deep-blue fluorescent materials, one of the most important prerequisites for the commercialization of OLEDs. Here, we report a new way to utilize polyphenylbenzene as a platform to yield a series of efficient deep-blue emitters. Nondoped multilayer electroluminescence (EL) devices using these new luminogens as emitting layers are fabricated. Maximum current efficiency (CE) of 2.0 cd A-1 is achieved and the Commission Internationale de léclairage (CIE) coordinates can stay at (0.15, 0.08), close to the saturated deep-blue (0.14, 0.08). Through rational design of the device structure, blue-violet emission with the CIE coordinates of (0.15, 0.06) can be realized. Furthermore, 10-based doped devices show deep-blue emission with improved CE as high as 4.51 cd A-1, and the external quantum efficiency (EQE) of 3.98%, which are among the best EL performance for deep-blue emission.
AB - Great efforts have been devoted to seek novel approaches for the construction of efficient deep-blue fluorescent materials, one of the most important prerequisites for the commercialization of OLEDs. Here, we report a new way to utilize polyphenylbenzene as a platform to yield a series of efficient deep-blue emitters. Nondoped multilayer electroluminescence (EL) devices using these new luminogens as emitting layers are fabricated. Maximum current efficiency (CE) of 2.0 cd A-1 is achieved and the Commission Internationale de léclairage (CIE) coordinates can stay at (0.15, 0.08), close to the saturated deep-blue (0.14, 0.08). Through rational design of the device structure, blue-violet emission with the CIE coordinates of (0.15, 0.06) can be realized. Furthermore, 10-based doped devices show deep-blue emission with improved CE as high as 4.51 cd A-1, and the external quantum efficiency (EQE) of 3.98%, which are among the best EL performance for deep-blue emission.
UR - http://www.scopus.com/inward/record.url?scp=84924346764&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.5b00094
DO - 10.1021/acs.chemmater.5b00094
M3 - 文章
AN - SCOPUS:84924346764
SN - 0897-4756
VL - 27
SP - 1847
EP - 1854
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 5
ER -