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电场诱导聚合物分子取向对单线态和三线态激子形成截面的影响

刘 军 侯延冰 孙 鑫 师全民 李 妍 靳 辉 鲁 晶

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电场诱导聚合物分子取向对单线态和三线态激子形成截面的影响

刘 军, 侯延冰, 孙 鑫, 师全民, 李 妍, 靳 辉, 鲁 晶

The influence of electric field introduced polymer molecular orientation on the formation cross-section of singlet and triplet excitons in PLED

Liu Jun, Hou Yan-Bing, Sun Xin, Shi Quan-Min, Li Yan, Jin Hui, Lu Jing
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  • 通过对聚乙烯咔唑(PVK) 掺杂三(2-苯基吡啶)铱(Ir(ppy)3)和4-二氰亚甲基-2-叔丁基-6-(1,1,7,7-四甲基久咯呢定基-9-烯基)-4H-吡喃(DCJTB),PVK 掺杂DCJTB和PVK掺杂Ir(ppy)3聚合物在成膜时高压电场作用下分子取向变化对单线态和三线态激子形成截面的研究,发现,随着成膜时电场的增强,单线态激子的形成截面在增加,而三线态激子的形成截面却减小.
    Ir (PPY)3 and DCJTB doped PVK films were fabricated in the presence of electric field which induced the orientation of polymer molecules, and their photoluminescence and electroluminescence were measured. The influence of electric field-induced orientation on the formation cross-sections of singlet and triplet excitons is investigated. The results showed that the electric field-induced orientation of polymer does not cause significant change in PL spectrum. However, the orientation of polymer results in obvious change in EL spectrum. For the devices based on polarized PVK, the EL from triplet states is reduced, which shows that polarization of PVK leads to the increase in the formation cross-section of singlet exciton and the decrease in the formation of triplet exciton.
    • 基金项目: 教育部跨世纪人才基金、教育部重点项目(批准号:105041),国家自然科学基金(批准号:90401006,10434030和90301004),973计划(批准号:2003CB314707)和华南理工大学特种功能材料及其制备新技术教育部重点实验室资助的课题.
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  • 文章访问数:  8056
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  • 被引次数: 0
出版历程
  • 收稿日期:  2006-06-27
  • 修回日期:  2006-10-13
  • 刊出日期:  2007-05-20

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