High Brightness and Enhanced Stability of CsPbBr3-Based Perovskite Light-Emitting Diodes by Morphology and Interface Engineering

doi:10.1002/adom.201801245

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	High Brightness and Enhanced Stability of CsPbBr3-Based Perovskite Light-Emitting Diodes by Morphology and Interface Engineering
	Liu, X.; Guo, X. Y.; Lv, Y.; Hu, Y. S.; Fan, Y.; Lin, J.; Liu, X. M.; Liu, X. Y.
	2018
发表期刊	Advanced Optical Materials
ISSN	2195-1071
卷号	6 期号:24 页码:7
摘要	A CsPbBr3-based all-inorganic perovskite light-emitting diode (PeLED) with ultrahigh brightness and enhanced stability is prepared by controlling of morphology and interface engineering. A nonionic surfactant polyoxyethylene (20) sorbitan monolaurate is introduced into the CsPbBr3 film, which induces tightly arranged grains in the perovskite film, thus highly passivating the defects at the grain boundaries, resulting in a performance-enhanced PeLED with a highest brightness of 111 000 cd m(-2), a peak current efficiency (CE) of 21.1 cd A(-1), a maximum external quantum efficiency (EQE) of 5.55%, and an operational lifetime of 4.5 h. The device properties are further improved by adding an anionic surfactant sodium dodecyl benzene sulfonate to modify the hole injection layer poly(ethylenedioxythiophene):polystyrenesulfonate. The hole current density is increased, further balancing the charge injection and transport. Finally, the optimal device displays an ultrahigh brightness of 179 000 cd m(-2), a peak CE of 28.0 cd A(-1), a maximum EQE of 7.39%, and a further prolonged lifetime of 6 h.
关键词	CsPbBr3 device stability interface engineering perovskite light-emitting diodes surface passivation hybrid perovskite inorganic perovskites halide perovskites quantum dots efficient performance nanocrystals cspbx3 layers films Materials Science Optics
DOI	10.1002/adom.201801245
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61009
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	Liu, X.,Guo, X. Y.,Lv, Y.,et al. High Brightness and Enhanced Stability of CsPbBr3-Based Perovskite Light-Emitting Diodes by Morphology and Interface Engineering[J]. Advanced Optical Materials,2018,6(24):7.
APA	Liu, X..,Guo, X. Y..,Lv, Y..,Hu, Y. S..,Fan, Y..,...&Liu, X. Y..(2018).High Brightness and Enhanced Stability of CsPbBr3-Based Perovskite Light-Emitting Diodes by Morphology and Interface Engineering.Advanced Optical Materials,6(24),7.
MLA	Liu, X.,et al."High Brightness and Enhanced Stability of CsPbBr3-Based Perovskite Light-Emitting Diodes by Morphology and Interface Engineering".Advanced Optical Materials 6.24(2018):7.

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