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There is a small difference in the device efficiency, best expressed as the external quantum efficiency (EQE), because this is independent of the emission wavelength. Noteworthy, the EQE of the devices shows the inverse order (3 > 2 > 4), compared with the ¦µPL values of the complexes in solution (4 > 2 > 3). This might be explained by an increased balance of the hole and electron mobility in films of complexes 3 and 2. Balanced hole and electron mobilities in LECs lead to a recombination and exciton generation zone in the center of the device, less prone to the quenching effects of the p+ and n− doped zones at the interface with the electrodes. Äã¿´ ÕÕËûÕâô˵ Òâ˼ÊÇEQEºÍÓ«¹âÁ¿×ÓЧÂÊÓ¦¸Ã³ÉÕý±È°É£¡Èç¹û²»ÊdzÉÕý±È£¬ËûÕâΪʲôÕâôǿµ÷ËûµÄ¹¤×÷small difference ÄØ£¿ |

3Â¥2012-05-17 14:42:10
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2Â¥2012-05-17 11:50:55
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4Â¥2012-05-17 15:18:02













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