TY - JOUR
T1 - Solution-processable hole-generation layer and electron-transporting layer
T2 - Towards high-performance, alternating-current-driven, field-induced polymer electroluminescent devices
AU - Chen, Yonghua
AU - Xia, Yingdong
AU - Smith, Gregory M.
AU - Sun, Hengda
AU - Yang, Dezhi
AU - Ma, Dongge
AU - Li, Yuan
AU - Huang, Wenxiao
AU - Carroll, David L.
PY - 2014/5/14
Y1 - 2014/5/14
N2 - The effect of solution-processed p-type doping of hole-generation layers (HGLs) and electron-transporting layer (ETLs) are systematically investigated on the performance of solution-processable alternating current (AC) field-induced polymer EL (FIPEL) devices in terms of hole-generation capability of HGLs and electron-transporting characteristics of ETLs. A variety of p-type doping conjugated polymers and a series of solution-processed electron-transporting small molecules are employed. It is found that the free hole density in p-type doping HGLs and electron mobility of solution-processed ETLs are directly related to the device performance, and that the hole-transporting characteristics of ETLs also play an important role since holes need to be injected from electrode through ETLs to refill the depleted HGLs in the positive half of the AC cycle. As a result, the best FIPEL device exhibits exceptional performance: a low turn-on voltage of 12 V, a maximum luminance of 20 500 cd m-2, a maximum current and power efficiency of 110.7 cd A -1 and 29.3 lm W-1. To the best of the authors' knowledge, this is the highest report to date among FIPEL devices driven by AC voltage. The effect of solution-processed hole-generation layers and electron- transporting layers is systematically investigated on the performance of AC-driven field-induced polymer electroluminescence (FIPEL) devices. A low turn-on voltage of 12 V, a maximum luminance of 20 500 cd m-2, and a maximum current and power efficiency of 110.7 cd A-1 and 29.3 lm W-1 are achieved. This study provides a pathway to high-performance FIPEL device engineering.
AB - The effect of solution-processed p-type doping of hole-generation layers (HGLs) and electron-transporting layer (ETLs) are systematically investigated on the performance of solution-processable alternating current (AC) field-induced polymer EL (FIPEL) devices in terms of hole-generation capability of HGLs and electron-transporting characteristics of ETLs. A variety of p-type doping conjugated polymers and a series of solution-processed electron-transporting small molecules are employed. It is found that the free hole density in p-type doping HGLs and electron mobility of solution-processed ETLs are directly related to the device performance, and that the hole-transporting characteristics of ETLs also play an important role since holes need to be injected from electrode through ETLs to refill the depleted HGLs in the positive half of the AC cycle. As a result, the best FIPEL device exhibits exceptional performance: a low turn-on voltage of 12 V, a maximum luminance of 20 500 cd m-2, a maximum current and power efficiency of 110.7 cd A -1 and 29.3 lm W-1. To the best of the authors' knowledge, this is the highest report to date among FIPEL devices driven by AC voltage. The effect of solution-processed hole-generation layers and electron- transporting layers is systematically investigated on the performance of AC-driven field-induced polymer electroluminescence (FIPEL) devices. A low turn-on voltage of 12 V, a maximum luminance of 20 500 cd m-2, and a maximum current and power efficiency of 110.7 cd A-1 and 29.3 lm W-1 are achieved. This study provides a pathway to high-performance FIPEL device engineering.
KW - alternating-current-driven
KW - electron-transporting layer
KW - field-induced electroluminescence
KW - hole-generation layer
KW - solution-processable
UR - http://www.scopus.com/inward/record.url?scp=84900009020&partnerID=8YFLogxK
U2 - 10.1002/adfm.201303242
DO - 10.1002/adfm.201303242
M3 - 文章
AN - SCOPUS:84900009020
SN - 1616-301X
VL - 24
SP - 2677
EP - 2688
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 18
ER -