Efficient Inorganic Perovskite Light-Emitting Diodes with Polyethylene Glycol Passivated Ultrathin CsPbBr3 Films

	Efficient Inorganic Perovskite Light-Emitting Diodes with Polyethylene Glycol Passivated Ultrathin CsPbBr3 Films
	Song, L.; X. Y. Guo; Y. S. Hu; Y. Lv; J. Lin; Z. Q. Liu; Y. Fan and X. Y. Liu
	2017
发表期刊	Journal of Physical Chemistry Letters
卷号	8 期号:17
摘要	Efficient inorganic perovskite light-emitting diodes (PeLEDs) with an ultrathin perovskite emission layer (similar to 30 nm) were realized by doping Lewis base polyethylene glycol (PEG) into CsPbBr3 films. PEG in the perovskite films not only physically fills the crystal boundaries but also interacts with the perovskite crystals to passivate the crystal grains, reduce nonradiative recombination, and ensure efficient luminance and high efficiency. As a result, promoted brightness, current efficiency (CE), and external quantum efficiency (EQE) were achieved. The nonradiative decay rate of the PEG:CsPbBr3 composite film is 1 order of magnitude less than that of the neat CsPbBr3 film. After further optimization of the molar ratio between CsBr and PbBr2, a peak CE of 19 cd/A, a maximum EQE of 5.34%, and a maximum brightness of 36600 cd/m(2) were achieved, demonstrating the interaction between PEG and the precursors. The results are expected to offer some helpful implications in optimizing the polymer-assisted PeLEDs with ultrathin emission layers, which might have potential application in see-through displays.
收录类别	sci ; ei
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/59192
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Song, L.,X. Y. Guo,Y. S. Hu,et al. Efficient Inorganic Perovskite Light-Emitting Diodes with Polyethylene Glycol Passivated Ultrathin CsPbBr3 Films[J]. Journal of Physical Chemistry Letters,2017,8(17).
APA	Song, L..,X. Y. Guo.,Y. S. Hu.,Y. Lv.,J. Lin.,...&Y. Fan and X. Y. Liu.(2017).Efficient Inorganic Perovskite Light-Emitting Diodes with Polyethylene Glycol Passivated Ultrathin CsPbBr3 Films.Journal of Physical Chemistry Letters,8(17).
MLA	Song, L.,et al."Efficient Inorganic Perovskite Light-Emitting Diodes with Polyethylene Glycol Passivated Ultrathin CsPbBr3 Films".Journal of Physical Chemistry Letters 8.17(2017).

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