Efficient Thermally Evaporated Perovskite Light-Emitting Devices via a Bilateral Interface Engineering Strategy

doi:10.1021/acs.jpclett.1c01592

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	Efficient Thermally Evaporated Perovskite Light-Emitting Devices via a Bilateral Interface Engineering Strategy
	L. Song; L. Huang; Y. Liu; X. Guo; C. Geng; S. Xu; Y. Xia; Y. Zhang; N. Luan and Y. Hu
刊名	Journal of Physical Chemistry Letters
	2021
卷号	12 页码:6165-6173
ISSN号	19487185
DOI	10.1021/acs.jpclett.1c01592
英文摘要	Physical vapor deposition has emerged as a promising strategy for efficient and stable all-inorganic perovskite light-emitting devices (PeLEDs). However, the thermally evaporated PeLEDs still suffer from unsatisfactory optoelectrical performance because of the massive nonradiative defects. Herein, we demonstrate an efficient bilateral interfacial defect-passivation strategy toward high-performance PeLEDs with a thermally deposited CsPbBr3emissive layer (EML). Specifically, the nonradiative defects from the bulk as well as the EML/charge transport layer (CTL) interface are significantly suppressed by implementing the 3-amino-1-propanol (3AP)-modified PEDOT:PSS and introducing ammonium salts, respectively. Simultaneously, both the 3AP induced less-conductive Cs4PbBr6and ammonium salts can balance the charge injection into the EML effectively. As a result, we achieved efficient PeLEDs based on thermally evaporated CsPbBr3with a luminance of 15745 cd/m2, current efficiency of 32 cd/A, external quantum efficiency of 8.86%, and lifetime of 3.74 h. The strategy proposed here may shed light on the development of highly efficient thermally evaporated PeLEDs. 2021 AmericanChemical Society
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65207]
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	L. Song,L. Huang,Y. Liu,et al. Efficient Thermally Evaporated Perovskite Light-Emitting Devices via a Bilateral Interface Engineering Strategy[J]. Journal of Physical Chemistry Letters,2021,12:6165-6173.
APA	L. Song.,L. Huang.,Y. Liu.,X. Guo.,C. Geng.,...&N. Luan and Y. Hu.(2021).Efficient Thermally Evaporated Perovskite Light-Emitting Devices via a Bilateral Interface Engineering Strategy.Journal of Physical Chemistry Letters,12,6165-6173.
MLA	L. Song,et al."Efficient Thermally Evaporated Perovskite Light-Emitting Devices via a Bilateral Interface Engineering Strategy".Journal of Physical Chemistry Letters 12(2021):6165-6173.