13 September 2012 An organic p-n junction for electrode-independent electron injection layer in organic light emitting diodes
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Abstract
We demonstrated that an organic p–n junction was successfully adapted to inverted organic light emitting diodes (IOLEDs) as an electron injection layer (EIL). The organic p–n junction composed of a ReO3 doped copper phthalocyanine (CuPc)/Rb2CO3 doped 4,7-diphenyl-1,10-phenanthroline (Bphen) layer showed very efficient charge generation under a reverse bias reaching to 100 mA/cm2 at 0.3 V and efficient electron injection from indium tin oxide (ITO) when adopted in IOLEDs. 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.
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Jeong-Hwan Lee, Jeong-Hwan Lee, Ji Whan Kim, Ji Whan Kim, Sei-Yong Kim, Sei-Yong Kim, Seung-Jun Yoo, Seung-Jun Yoo, Jae-Hyun Lee, Jae-Hyun Lee, Jang-Joo Kim, Jang-Joo Kim, } "An organic p-n junction for electrode-independent electron injection layer in organic light emitting diodes", Proc. SPIE 8476, Organic Light Emitting Materials and Devices XVI, 84761R (13 September 2012); doi: 10.1117/12.930237; https://doi.org/10.1117/12.930237
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