气候变化领域集成服务门户(CCPortal): Structural features and their functions in surfactant-armoured methylammonium lead iodide perovskites for highly efficient and stable solar cells

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DOI	10.1039/c8ee00995c
	Structural features and their functions in surfactant-armoured methylammonium lead iodide perovskites for highly efficient and stable solar cells
	Jung M.; Shin T.J.; Seo J.; Kim G.; Seok S.I.
发表日期	2018
ISSN	17545692
起始页码	2188
结束页码	2197
卷号	11 期号:8
英文摘要	Methylammonium lead iodide perovskites have limited practical applications due to a lack of stability under operating conditions. Environmental stability under heating has not yet been achieved, although recent studies modifying perovskites with long organic cations have reported the progress of stabilisation under humid conditions. In this work, we report the structural evolution of long alkylammonium-modified MAPbI3 and its functions for highly efficient and stable solar cells. As an encapsulating agent, octylammonium (OA) cation produced individual MAPbI3 grains in full armour without the formation of layered structures in contrast to butylammonium (BA) and phenethylammonium (PEA) cations. Our OA-armoured MAPbI3 achieved a stabilised power conversion efficiency of 20.1% without a deterioration of charge transport properties due to highly preferential orientation suppressing non-radiative recombination. The structural features also led to a much improved thermal stability at 85 °C in ambient atmosphere retaining 80% of the initial efficiency after 760 h without any encapsulation, as well as water tolerance. This work addresses widespread concerns associated with the photovoltaic efficiency and stability of MAPbI3 by exploring the inter-relationship between structural features and their functions in surfactant-modified perovskites. © 2018 The Royal Society of Chemistry.
英文关键词	Efficiency; Iodine compounds; Layered semiconductors; Perovskite; Perovskite solar cells; Positive ions; Solar cells; Stability; Surface active agents; Environmental stability; Inter-relationships; Non-radiative recombinations; Operating condition; Photo-voltaic efficiency; Power conversion efficiencies; Preferential orientation; Structural evolution; Lead compounds; ammonium compound; cation; energy efficiency; fuel cell; heating; iodide; operations technology; perovskite; photovoltaic system; surfactant
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/190156
作者单位	School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea; UNIST Central Research Facilities (UCRF), Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea; Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT), Deajeon, 34114, South Korea
推荐引用方式 GB/T 7714	Jung M.,Shin T.J.,Seo J.,et al. Structural features and their functions in surfactant-armoured methylammonium lead iodide perovskites for highly efficient and stable solar cells[J],2018,11(8).
APA	Jung M.,Shin T.J.,Seo J.,Kim G.,&Seok S.I..(2018).Structural features and their functions in surfactant-armoured methylammonium lead iodide perovskites for highly efficient and stable solar cells.Energy & Environmental Science,11(8).
MLA	Jung M.,et al."Structural features and their functions in surfactant-armoured methylammonium lead iodide perovskites for highly efficient and stable solar cells".Energy & Environmental Science 11.8(2018).