TY - JOUR
T1 - Luminance materials containing carbazole and triphenylamine exhibiting high hole-transporting properties
AU - Ouyang, Xin Hua
AU - Zeng, He Ping
AU - Ding, Gui Ying
AU - Jiang, Wen Long
AU - Li, Jing
N1 - Funding Information:
Financial support from the National Natural Science Foundation of China (Nos. 20671036, 2007A010500008 and 2008B010800030) are gratefully acknowledged. Ouyang X.H. would like to acknowledge the receipt of the Doctorate Foundation from South China University of Technology (SCUT), Guangzhou and the China Scholarship Council. J.L. is a Cheung Kong Scholar associated with SCUT.
PY - 2009/10
Y1 - 2009/10
N2 - Two novel 2-substitutd-8-hydroxyquinoline derivatives were designed and synthesized. Their luminance properties and carrier transporting abilities were studied when integrated in four different organic light-emitting device structures. The four devices are structured as following-device A: indium tin oxide glass substrate (ITO)/2-TNATA/NPB/(2-[2-(9-ethyl-9H-carbazol-2-yl)-vinyl]-quinolato zinc (1) and 2-[2-(4-diphenylamino-phenyl)-vinyl]-quinolato zinc (2))/Alq3/LiF/aluminum (Al); device B: ITO/2-TNATA/NPB/1 or 2/LiF/Al; device C: ITO/2-TNATA/1 or 2/Alq3/LiF/Al; device D: ITO/2-TNATA/1 or 2/Alq3/LiF/Al. In the device A, the maximum brightness of compound 1 is 5857 cd m-2 at 11 V with the luminance efficiency 1.84 cd A-1. For 2 it is 6047 cd m-2 at 10 V with an efficiency of 2.22 cd A-1. In the device B, the maximum brightness of 1 is 745 cd m-2 at 11 V and efficiency is 0.32 cd A-1. These values are 1748 cd m-2 at 10 V and 0.42 cd A-1 for 2, respectively. In the device C, the maximum brightness of 1 and 2 are 8729 and 5838 cd m-2 at 10 V, respectively, with an efficiency of 1.99 and 1.71 cd A-1. In the device D, the maximum brightness and efficiency of 1 are 8512 cd m-2 at 13 V and 3.10 cd A-1, and they are 9818 cd m-2 at 13 V and 0.42 cd A-1, for 2. Our results also show that both 1 and 2 are good bipolar and bifunctional molecules with high hole-transporting and luminance properties.
AB - Two novel 2-substitutd-8-hydroxyquinoline derivatives were designed and synthesized. Their luminance properties and carrier transporting abilities were studied when integrated in four different organic light-emitting device structures. The four devices are structured as following-device A: indium tin oxide glass substrate (ITO)/2-TNATA/NPB/(2-[2-(9-ethyl-9H-carbazol-2-yl)-vinyl]-quinolato zinc (1) and 2-[2-(4-diphenylamino-phenyl)-vinyl]-quinolato zinc (2))/Alq3/LiF/aluminum (Al); device B: ITO/2-TNATA/NPB/1 or 2/LiF/Al; device C: ITO/2-TNATA/1 or 2/Alq3/LiF/Al; device D: ITO/2-TNATA/1 or 2/Alq3/LiF/Al. In the device A, the maximum brightness of compound 1 is 5857 cd m-2 at 11 V with the luminance efficiency 1.84 cd A-1. For 2 it is 6047 cd m-2 at 10 V with an efficiency of 2.22 cd A-1. In the device B, the maximum brightness of 1 is 745 cd m-2 at 11 V and efficiency is 0.32 cd A-1. These values are 1748 cd m-2 at 10 V and 0.42 cd A-1 for 2, respectively. In the device C, the maximum brightness of 1 and 2 are 8729 and 5838 cd m-2 at 10 V, respectively, with an efficiency of 1.99 and 1.71 cd A-1. In the device D, the maximum brightness and efficiency of 1 are 8512 cd m-2 at 13 V and 3.10 cd A-1, and they are 9818 cd m-2 at 13 V and 0.42 cd A-1, for 2. Our results also show that both 1 and 2 are good bipolar and bifunctional molecules with high hole-transporting and luminance properties.
KW - 2-substitued-8-hydroxyquinoline derivatives
KW - Electroluminescence properties
KW - Organic light-emitting devices
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U2 - 10.1016/j.synthmet.2009.07.026
DO - 10.1016/j.synthmet.2009.07.026
M3 - Article
AN - SCOPUS:70349549938
VL - 159
SP - 2063
EP - 2069
JO - Synthetic Metals
JF - Synthetic Metals
SN - 0379-6779
IS - 19-20
ER -