Highly efficient and stable organic light-emitting diodes employing MoO3-doped perylene-3, 4, 9, 10-tetracarboxylic dianhydride as hole injection layer |
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| Authors: | Linsen Li Min Guan Guohua Cao Yiyang Li Yiping Zeng |
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| Institution: | (1) National Research Laboratory of Nano-Information Materials, Department of Polymer Science and Engineering, Pusan National University, Busan, 609-735, Korea; |
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| Abstract: | We report highly efficient and stable organic light-emitting diodes (OLEDs) with MoO3-doped perylene-3, 4, 9, 10-tetracarboxylic dianhydride (PTCDA) as hole injection layer (HIL). A green OLED with structure
of ITO/20 wt% MoO3: PTCDA/NPB/Alq3/LiF/Al shows a long lifetime of 1012 h at the initial luminance of 2000 cd/m2, which is 1.3 times more stable than that of the device with MoO3 as HIL. The current efficiency of 4.7 cd/A and power efficiency of 3.7 lm/W at about 100 cd/m2 have been obtained. The charge transfer complex between PTCDA and MoO3 plays a decisive role in improving the performance of OLEDs. |
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