| 光谱学与光谱分析 |
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| Fabrication and Analysis of the Organic Light-Emitting Diode with Liquid Host Material |
| XU Deng-hui |
| Department of Physics, Beijing Technology and Business University, Beijing 100037, China |
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Abstract An organic light-emitting diode (OLED) with a liquid host of 9-(2-ethylhexyl)carbazole (EHCz) doped with a guest dye of 5,6,11,12-tetraphenylnapthacene (rubrene) was demonstrated. Here the poly(3,4-ethylenedioxy thiophene)∶poly(styrenesulphonate) (PEDOT∶PSS) and Cs2CO3 were served as the hole injection material and electron injection material, respectively. The device structure consists of ITO/PEDOT∶PSS/EH Cz∶rubrene/Cs2CO3/ITO. Electroluminescence from rubrene with the highest external quantum efficiency of 0.03% at 0.26 mA·cm-2 was obtained. The photoluminescence (PL) and PL quantum efficiency of the materials were further studied.
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Received: 2010-07-29
Accepted: 2010-11-10
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Corresponding Authors:
XU Deng-hui
E-mail: xudh@th.btbu.edu.cn
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