Chinese Journal of Liquid Crystals and Displays, Volume. 39, Issue 7, 875(2024)
All-solution-processed CsPbBr3 quantum dot light-emitting diodes modified with 2-hexyldecanoic acid ligand
Fig. 1. （a）Transmission electron microscope images and（b）size distribution histograms of CsPbBr3 QDs，CsPbBr3 QDs-0.5，CsPbBr3 QDs-1，CsPbBr3 QDs-1.5.
Fig. 2. （a）X-ray diffraction patterns and（b）Fourier transform infrared spectra of CsPbBr3 QDs，CsPbBr3 QDs-0.5，CsPbBr3 QDs-1 and CsPbBr3 QDs-1.5.
Fig. 3. （a）UV-visible absorption spectra，（b）normalized photoluminescence spectra and（c）PLQY of CsPbBr3 QDs，CsPbBr3 QDs-0.5，CsPbBr3 QDs-1 and CsPbBr3 QDs-1.5.
Fig. 4. （a）Scanning electron microscope and（b）atomic force microscope images of CsPbBr3 QDs，CsPbBr3 QDs-0.5，CsPbBr3 QDs-1 and CsPbBr3 QDs-1.5 films.
Fig. 5. （a）J-V，（b）L-V，（c）CE-V and（d）EQE-V characteristic curves of CsPbBr3 QD light-emitting diodes.
Fig. 6. （a）J-V，（b）L-V，（c）CE-V and（d）EQE-V curves of the devices prepared based on Poly-TPD or PVK double hole transport layers.
Table 1. Performance parameters of CsPbBr3 QD light-emitting diodes
View tableView in ArticleTable 1. Performance parameters of CsPbBr3 QD light-emitting diodes
样品 Von/V EL peak/nm FWHM/nm Lmax/（cd·m-2） CEmax/（cd·A-1） EQEmax/% CsPbBr3 QDs 2.8 515 21 9 0.09 0.04 CsPbBr3 QDs-0.5 2.6 517 22 68 0.34 0.05 CsPbBr3 QDs-1 2.7 517 20 110 1.30 0.12 CsPbBr3 QDs-1.5 2.6 519 21 156 2.54 0.14
Table 2. Performance parameters of the devices based on Poly-TPD and PVK double hole transport layer
View tableView in ArticleTable 2. Performance parameters of the devices based on Poly-TPD and PVK double hole transport layer
样品 Von/V EL peak/nm FWHM/nm Lmax/（cd·m-2） CEmax/（cd·A-1） EQEmax/% PVK 3.6 515 21 220 3.38 0.17 Poly-TPD 2.8 517 22 436 5.37 0.20
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Jiaqi WU, Chengyang WANG, Hongbo LU, Jun ZHU. All-solution-processed CsPbBr3 quantum dot light-emitting diodes modified with 2-hexyldecanoic acid ligand[J]. Chinese Journal of Liquid Crystals and Displays, 2024, 39(7): 875
Category: Research Articles
Received: May. 15, 2024
Accepted: --
Published Online: Jul. 23, 2024
The Author Email: Jun ZHU (jzhu@hfut.edu.cn)
