气候变化领域集成服务门户(CCPortal): Self-passivation of low-dimensional hybrid halide perovskites guided by structural characteristics and degradation kinetics

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DOI	10.1039/d0ee03836a
	Self-passivation of low-dimensional hybrid halide perovskites guided by structural characteristics and degradation kinetics
	Meng K.; Wang X.; Li Z.; Liu Z.; Qiao Z.; Wang C.; Hu Y.; Li S.; Cheng L.; Zhai Y.; Chen G.
发表日期	2021
ISSN	17545692
起始页码	2357
结束页码	2368
卷号	14 期号:4
英文摘要	Low-dimensional perovskite (LDP) holds great potential to deliver highly stable and efficient solar cells. However, a fundamental understanding of the structure, composition and degradation mechanism of the LDP material is required for further advancements. Here, we present an effective self-passivation strategy to concurrently enhance the efficiency and stability of the butylammonium (BA) based LDP solar cells. It is inspired and guided by the structural characteristics and degradation kinetics of the LDP film. We show that the BA-based LDP film possesses a unique crystal stacking pattern, containing highly oriented perovskite crystals of different layer thicknesses. We also uncover the divergent degradation behaviour of the LDP film under thermal stress and the unique disproportion degradation process under high-humidity conditions. Without introducing foreign compounds, the LDP film is passivated with a thin layer of the BA-based perovskite, which results in an exceptional power conversion efficiency of 17.0% and significantly enhanced device stability. These studies provide mechanistic insight into the structure and stability of the LDP material and offer guidelines for further device optimization. This journal is © The Royal Society of Chemistry.
英文关键词	Conversion efficiency; Crystals; Degradation; Efficiency; Passivation; Perovskite; Degradation behaviours; Degradation kinetics; Degradation mechanism; Degradation process; Device optimization; Halide perovskites; Power conversion efficiencies; Structural characteristics; Solar cells; degradation; halide; perovskite; reaction kinetics
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190715
作者单位	School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
推荐引用方式 GB/T 7714	Meng K.,Wang X.,Li Z.,et al. Self-passivation of low-dimensional hybrid halide perovskites guided by structural characteristics and degradation kinetics[J],2021,14(4).
APA	Meng K..,Wang X..,Li Z..,Liu Z..,Qiao Z..,...&Chen G..(2021).Self-passivation of low-dimensional hybrid halide perovskites guided by structural characteristics and degradation kinetics.Energy & Environmental Science,14(4).
MLA	Meng K.,et al."Self-passivation of low-dimensional hybrid halide perovskites guided by structural characteristics and degradation kinetics".Energy & Environmental Science 14.4(2021).