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A direct evidence for the energy transfer from phosphorescent molecules to quantum dots in a driving light emitting diode

文献类型：期刊论文

作者Z.Zhang; X.Guan; Z.H.Kang; H.Z.Zhang; Q.H.Zeng; R.M.Yu
刊名Organic Electronics
出版日期2019
卷号73页码:337-341
ISSN号1566-1199
关键词QLED,Energy transfer,Transient electroluminescence,Roll-off,turn-on voltage,highly efficient,thin-films,electroluminescence,singlet,layer,Materials Science,Physics
DOI10.1016/j.orgel.2019.06.045
英文摘要The energy transfer (ET) processes are considered to enhance the emission in the organic/inorganic quantum dots (QDs) hybrid structures.And efficient QDs based light emitting diodes (QLEDs) have been widely reported by employing this hybrid device design.However, such ET processes have so far been only verified in the photoluminescence regime.Therefore, it is insufficient and unconvincing to elaborate the electroluminescence (EL) mechanism in the devices.Here we for the first time demonstrate the ET process between phosphorescent bis(4,6-difluorophenylpyridinato-N,C2)-picolinatoiridium (FIrpic) and QDs in a QLED under the electrical excitation regime by means of transient EL technology.The prolonged EL decay in the transient EL spectrum confirms that the FIrpic molecules with long exciton lifetime, just like an exciton reservoir, can harvest both the leaked electrons from the QDs and holes injected from hole transport layer, which then form excitons and transfer their energy to the QDs.
语种英语
源URL[http://ir.ciomp.ac.cn/handle/181722/62766]  
专题中国科学院长春光学精密机械与物理研究所
推荐引用方式
GB/T 7714		 Z.Zhang,X.Guan,Z.H.Kang,et al. A direct evidence for the energy transfer from phosphorescent molecules to quantum dots in a driving light emitting diode[J]. Organic Electronics,2019,73:337-341.
APA Z.Zhang,X.Guan,Z.H.Kang,H.Z.Zhang,Q.H.Zeng,&R.M.Yu.(2019).A direct evidence for the energy transfer from phosphorescent molecules to quantum dots in a driving light emitting diode.Organic Electronics,73,337-341.
MLA Z.Zhang,et al."A direct evidence for the energy transfer from phosphorescent molecules to quantum dots in a driving light emitting diode".Organic Electronics 73(2019):337-341.

入库方式： OAI收割

来源：长春光学精密机械与物理研究所

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