Improved performance of organic light-emitting diodes with dual electron transporting layers |
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| Authors: | Jiao Zhi-Qiang Wu Xiao-Ming Hua Yu-Lin Mu Xue Bi Wen-Tao Bai Juan-Juan Yin Shou-Gen |
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| Affiliation: | a. Institute of Physical Materials, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;b. Key Laboratory of Display Materials & Photoelectric Devices (Tianjin University of Technology),Ministry of Education, Tianjin 300384, China;c. Tianjin Key Laboratory for Photoelectric Materials & Devices, Tianjin 300384, China |
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| Abstract: | In this study the performance of organic light-emitting diodes (OLEDs) are enhanced significantly, which is based on dual electron transporting layers (Bphen/CuPc). By adjusting the thicknesses of Bphen and CuPc, the maximal luminescence, the maximal current efficiency, and the maximal power efficiency of the device reach 17570 cd/m2 at 11 V, and 5.39 cd/A and 3.39 lm/W at 3.37 mA/cm2 respectively, which are enhanced approximately by 33.4%, 39.3%, and 68.9%, respectively, compared with those of the device using Bphen only for an electron transporting layer. These results may provide some valuable references for improving the electron injection and the transportation of OLED. |
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| Keywords: | organic light-emitting diodes dual electron transporting layers CuPc |
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