Chinese Journal of Quantum Electronics, Volume. 19, Issue 3, 269(2002)

Yellow-green Electroluminescent Diode Based on Molecularly Doped Polymer

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    The DC drived electro-luminescent device has a multilayer structure of ITO/ MEMO-PPV: R6G/Alq3/Al. Where MEMO-PPV [poly (2-methyoxy-5-ethyloxy)-4-di- (2- methyoxy-5-octaoxy) -phenylone vinylene] is the emitting layer as well as hole-transport layer, which achieved by means of rotation coating method. Rhodamine (R6G) is doped organic thin film. Alq3(8-hydroxy quinoline aluminium) is electron-transport layer. The wavelength of the device is 550 nm, where emission color is yellow-green. We find that the concentration of R6G has highly effects on the emission color, and show that dye doped device ITO/MEMO-PPV: R6G/Alq3/Al is more durable than undoped device ITO/MEMO-PPV/Alq3/Al. Its maximum luminance is 3600 cd/m2 at 18 V, with external quantum efficiency is 3.2%.

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    [in Chinese], [in Chinese], [in Chinese]. Yellow-green Electroluminescent Diode Based on Molecularly Doped Polymer[J]. Chinese Journal of Quantum Electronics, 2002, 19(3): 269

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    Paper Information

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    Received: Apr. 12, 2001

    Accepted: --

    Published Online: May. 15, 2006

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