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《Chinese Journal of Semiconductors》 2001-02
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Vacuum-Deposited Bilayer Organic Light-Emitting Diodes

ZHAO Jun qing 1,XIE Shi jie 1,2 ,HAN Sheng hao 3, YANG Zhi wei 3,YE Li na 3 and YANG Tian lin 3[KH2D][WT6BX](1 Department of Physics,Shandong University,Jinan 250100,China)(2 National Laboratory of Crystal Materials,Shandong University  
Bi layer organic light emitting diodes with ITO/TPD/Alq 3/Al configuration have been fabricated.Lifetime of the devices has been tested at given external voltages and the degradation cause of the devices been analyzed.It is found that the luminescent intensity and stability of the bilayer LEDs increase obviously,compared with those of the single layer ITO/Alq 3/Al devices.XPS probing and other investigations show that Indium diffusion to the organic films,the adhesion of ITO films to the substrates and the surface properties of ITO films should be responsible for the performance of organic LEDs.
【Fund】: 山东省自然科学基金资助项目! (批准号 Y98G12 10 8)&&
【CateGory Index】: TN383.1
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