中国物理B ›› 2012, Vol. 21 ›› Issue (6): 67202-067202.doi: 10.1088/1674-1056/21/6/067202

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Improved performance of organic light-emitting diodes with dual electron transporting layers

焦志强a b c, 吴晓明a b c, 华玉林a b c, 穆雪a b c, 毕文涛a b c, 白娟娟a b c, 印寿根a b c   

  1. 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
  • 收稿日期:2011-11-11 修回日期:2011-12-05 出版日期:2012-05-01 发布日期:2012-05-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60906022 and 60876046) and the Tianjin Natural Science Foundation of China (Grant No. 10JCYBJC01100).

Improved performance of organic light-emitting diodes with dual electron transporting layers

Jiao Zhi-Qiang(焦志强)a)b)c), Wu Xiao-Ming(吴晓明)a)b)c), Hua Yu-Lin(华玉林)a)b)c)†, Mu Xue(穆雪)a)b)c), Bi Wen-Tao(毕文涛)a)b)c), Bai Juan-Juan(白娟娟)a)b)c), and Yin Shou-Gen(印寿根)a)b)c)   

  1. 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
  • Received:2011-11-11 Revised:2011-12-05 Online:2012-05-01 Published:2012-05-01
  • Contact: Hua Yu-Lin E-mail:yulinhua@tjut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60906022 and 60876046) and the Tianjin Natural Science Foundation of China (Grant No. 10JCYBJC01100).

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摘要： 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.

关键词: organic light-emitting diodes, dual electron transporting layers, CuPc

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.

Key words: organic light-emitting diodes, dual electron transporting layers, CuPc

中图分类号:  (Polymers; organic compounds (including organic semiconductors))

  • 72.80.Le
78.60.Fi (Electroluminescence)