An organic p-n junction as an efficient and cathode independent electron injection layer for flexible inverted organic light emitting diodes

作者：Lee Jeong Hwan; Kim Ji Whan; Kim Sei Yong; Yoo Seung Jun; Lee Jae Hyun; Kim Jang Joo

来源：Organic Electronics, 2012, 13(4): 545-549.

DOI：10.1016/j.orgel.2011.12.024

• Organic p-n junction
• Electrode independent electron injection
• Inverted organic light emitting diode
• Flexible electronics

We demonstrate an organic p-n junction as an efficient electron injection layer for green inverted bottom-emission organic light emitting diodes (IBOLEDs). The organic p-n junction composed of a p-CuPc/n-Bphen layer showed very efficient charge generation under a reverse bias reaching to 100 mA/cm(2) at 0.3 V, and efficient electron injection from indium tin oxide (ITO) when adopted in IBOLEDs. Moreover, the organic p-n junction resulted in the same current density-voltage-luminance characteristics independent of the work function of the cathode, which is a valuable advantage for flexible displays.

• 出版日期2012-4