Influence of the electric field on carriers recombination zone in bilayer organic electroluminescent device |
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| Authors: | Shengyi Yang Zhenjia Wang Zheng Xu Xiaohong Chen Yanbing Hou Xurong Xu |
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| Institution: | (1) Institute of Optoelectronic Technology, Northern Jiaotong University, 100044 Beijing, China |
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| Abstract: | The electroluminescence (EL) of bilayer devices (ITO/Polymer/Alq3/Al) made from two PPV derivatives (MN-PPV and MEH-PPV), respectively, and the influence of the organic layers’ thickness
on the characteristics of the device are investigated. Different spectra and variations are observed for different thicknesses
of Alq3 layer in this bilayer organic light-emitting diodes (LEDs) as increasing applied bias. Based on the energy level and field-assisted
tunneling at the interface, we attributed these phenomena to electric field redistribution in the device and field-assisted
charges being transported and tunneling through energy barrier at high electric field. |
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| Keywords: | electroluminescence bilayer devices recombination zone carriers |
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