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Á½ÖֽṹµÄHOMOºÍLUMOÄܼ¶ÊDz»Ò»ÑùµÄ£¬»á¶ÔÔØÁ÷×ÓµÄ×¢Èë²úÉúÓ°Ïì,·¢¹âÑÕɫҲÊDz»Ò»ÑùµÄ¡£ÆäËü¹ØÓÚAlq3µÄÑо¿ÔòÖ÷Òª¼¯ÖÐÔÚ¹âµçÆ÷¼þµÄЧÂʺÍÎȶ¨ÐÔÉÏ¡£2008Ä꣬Yuki Nagata ҲģÄâÁËamorphous Alq3ÔØÁ÷×Ó´«Êä¹ý³ÌµÄÑо¿±íÃ÷Æä´«ÊäÊÇÒ»ÖÖÌøÔ¾»úÖÆ£¬ºÍµç³¡ÓëζȵĹØÏµÊÇPoole-Frenkel»úÖÆ£¬Í¬Ä꣬J. J. Kwiatkowski ÓÃMonte Carlo Ä£ÄâÁËamorphous Alq3,½á¹û±íÃ÷µç×ÓµÄÇ¨ÒÆÂÊΪ¿ÕѨµÄtwo orders £¬µ«ÊÇËû¼ÆËãµÄÇ¨ÒÆÂÊÓëµç³¡µÄ¹ØÏµ²»·ûºÏPoole-Frenkel»úÖÆ£¬»¹ÓÐһЩ´ÓÀíÂÛÉÏ̽ÌÖ¶ÔAlq3µÄÅäÌå½øÐв»Í¬È¡´ú¶ÔÆä¹âÎïÀíÐÔÖʵÄÓ°ÏìµÄ±¨µÀ¡£ÔÚÀíÂÛÉ϶ÔAlq3µÄ´«ÊäÌØÐÔµÄÑо¿´ó¶à½öÏÞÓھʽ±¡Ä¤ºÍ¦Â-¾§Ï࣬»¹ÓÐһЩ½áºÏ̬ÃܶȸÅÄî´Ó¶¨ÐԵĽǶÈ̽ÌÖÆä´«Êäµç×ӵĸßЧÐÔ£¬ÒÔÉÏÕâЩÑо¿¶¼´ó¶à½öÏÞÓÚ¾§Ìå¡£
The energy level of HOMO and LUMO of the two structures is not the same, which would influence the injection of the carrier, and their light color is not the same, either. Other studies on Alq3 mainly focused the efficiency and the stability of the photoelectric devices. In 2008, Yuki Nagata also simulated the transmission of amorphous Alq3 carrier which indicated that its transmission was a leaping mechanism, and its relation with electric field and temperature was Poole-Frenkel mechanism. In the same year, JJ Kwiatkowski used Monte Carlo to make an simulation of amorphous Alq3, which showed that the mobility of electron was two orders of the hole, but he found that the relation between the mobility and the electric field did not match the Poole-Frenkel mechanism. There were also reports which discussed theoretically the influence of the different substitution of the ligands of Alq3 on its photophysical properties. The theoretical study of the transmission characteristics of Alq3 are mainly restricted in the film and¦Â-crystalline phase. Besides, there are some other reserches which focus on the efficiency of transmit electrons combined with the state density from the qualitative point of view. Nevertheless, all the studies mentioned above are mostly limited to the crystal. |
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