Chin. Phys. Lett.  2003, Vol. 20 Issue (3): 420-422    DOI:
Original Articles |
A New Kind of Buffer Layer of TiO2 Self-Assembled Material in Organic Electroluminescent Devices
BAI Feng1;DENG Zhen-Bo1;ZHANG Meng-Xin1;ZOU Wei-Yan2;CAI Qiang2
1Institute of Optoelectronics Technology, Northern Jiaotong University, Beijing 100044 2Department of Material, Tsinghua University, Beijing 100084
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BAI Feng, DENG Zhen-Bo, ZHANG Meng-Xin et al  2003 Chin. Phys. Lett. 20 420-422
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Abstract A new kind of TiO2 self-assembled nanometer material has been fabricated and is used as a hole-injecting buffer layer in organic electroluminescent devices. The luminance and the efficiency of a device individually rises from 1500 cd/m2 to 5000 cd/m2 and from 2.0 cd/A to 3.92 cd/A at the current density of 100 mA/cm2. The enhancements in brightness and efficiency are attributed to an improved balance of hole and electron injections due to blocking of the injected holes by the buffer layer and a more homogeneous adhesion of the hole transporting layer to the anode.
Keywords: 78.60.Fi      85.60.Jb     
Published: 01 March 2003
PACS:  78.60.Fi (Electroluminescence)  
  85.60.Jb (Light-emitting devices)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I3/0420
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