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DOI	10.1088/1361-6528/aba140
	Improved photoemission and stability of 2D organic-inorganic lead iodide perovskite films by polymer passivation
	Abdelhamied M.M.; Song Y.; Liu W.; Li X.; Long H.; Wang K.; Wang B.; Lu P.
发表日期	2020
ISSN	9574484
卷号	31 期号:42
英文摘要	2D organic-inorganic lead iodide perovskites hold great promise for functional optoelectronic devices. However, their performances have been seriously limited by poor long-term stability in ambient environment. Here, we perform a systematic study for the stability improvement of a typical 2D organic-inorganic lead iodide perovskite (PEA)2PbI4. The degradation of the (PEA)2PbI4 films can be attributed to the interaction with the humidity in environment, which leads to decomposition of the perovskite components. Then, we demonstrate that polymer passivation provides an effective approach for improving the crystal quality and stability of the (PEA)2PbI4 films. Correspondingly, the photoemission of the polymer-passivated (PEA)2PbI4 films has been enhanced due to the decreased trap states. More importantly, a hydrophobic polymer (Poly(4-Vinylpyridine), PVP) will protect the (PEA)2PbI4 films from humidity in ambient environment, which can greatly improve the physical and chemical stability of the 2D perovskite films. As a result, the PVP-passivated (PEA)2PbI4 films can produce a bright emission even after long-term (>15 d) exposure to ambient environment (25 C, 80% RH) and continuous UV illumination. This work provides a convenient and effective approach for improving the long-term stability of 2D organic-inorganic lead iodide perovskites, which shows great promise for fabricating large-area and versatile optoelectronic devices. © 2020 IOP Publishing Ltd.
英文关键词	2D perovskites; optoelectronic devices; photoemission; polymer passivation; stability
scopus关键词	Chemical stability; Iodine compounds; Layered semiconductors; Optoelectronic devices; Passivation; Perovskite; Photoemission; Polymer films; Ambient environment; Crystal qualities; Effective approaches; Hydrophobic polymers; Long term stability; Organic-inorganic; Poly(4-vinyl pyridine); Stability improvement; Lead compounds
来源期刊	Nanotechnology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176772
作者单位	Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China; Radiation Physics Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority (AEA), Cairo, Egypt; Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan, 430205, China
推荐引用方式 GB/T 7714	Abdelhamied M.M.,Song Y.,Liu W.,et al. Improved photoemission and stability of 2D organic-inorganic lead iodide perovskite films by polymer passivation[J],2020,31(42).
APA	Abdelhamied M.M..,Song Y..,Liu W..,Li X..,Long H..,...&Lu P..(2020).Improved photoemission and stability of 2D organic-inorganic lead iodide perovskite films by polymer passivation.Nanotechnology,31(42).
MLA	Abdelhamied M.M.,et al."Improved photoemission and stability of 2D organic-inorganic lead iodide perovskite films by polymer passivation".Nanotechnology 31.42(2020).