【作者】 阮春燕； 何凤； 张颖芳； 程刚； 马於光； 刘式墉；

【Author】 Chunyan Ruan1 , Feng He2 , Yingfang Zhang1, Gang Cheng1,2, Yuguang Ma2 and Shiyong Liu1,* 1State Key Laboratory of Integrated Optoelectronics, School of Electronic Science and Technology,Jilin University, 130012, Changchun 2Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, 130012, Changchun

【机构】 吉林大学集成光电子学国家重点实验室； 吉林大学超分子结构与材料教育部重点实验室；

【摘要】 本文研究了两种PPV齐聚物的掺杂体系的EL特性。这两种材料分别为p-bis(p-N,N-di-phenyl-aminostyryl)benzene(DSA-ph)和2,5,2’,5’-tetrastyryl-biphenyl(TSB),前者是最近研究得比较多的一种荧光染料;后者是一种蓝光材料,其最大EL亮度为1663cd/m2,最大EL效率为1.57cd/A,相当于外量子效率1.02%。为了得到更高效率的蓝光器件,我们将DSA-ph掺入TSB母体中。二者之间有很好的能量转移,同时,由于其结构的相似性,DSA-ph分子在TSB中有很好的分散性。由于这些因素,我们得到了性能比较好的蓝光器件,当掺杂浓度为4wt%时器件的效率最高,达到了12.2cd/A,相应的外量子效率为6.2%;最大的功率效率为6.39lm/W;最大亮度为13500cd/m2。更多还原

【Abstract】 EL characteristics of a doped PPV oligomoer system are studied. The materials are DSA-ph and TSB, where the former is a widely used blue dye and the latter a blue light-emitting material with a max. luminance of 1663 cd /m2, and a max. luminous efficiency of 1.57 cd/A,corresponding to a external quantum efficiency of 1.02 %. To achieve a more efficient OLED, DSA-ph is doped into TSB host, between which energy transfer can take place. Furthermore, DSA-ph molecules are equably separated in TSB molecules due to the similarity of their molecular structures. Consequently,we realized a OLED with a max. luminous efficiency of 12.2 cd/A, corresponding to a external efficiency of 6.2 %, a max. power efficiency of 6.39 lm/W, and a max. luminance of 13500 cd /m2.更多还原