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DOI	10.1039/c7ee00685c
	Impact of microstructure on the electron-hole interaction in lead halide perovskites
	Mahboubi Soufiani A.; Yang Z.; Young T.; Miyata A.; Surrente A.; Pascoe A.; Galkowski K.; Abdi-Jalebi M.; Brenes R.; Urban J.; Zhang N.; Bulović V.; Portugall O.; Cheng Y.-B.; Nicholas R.J.; Ho-Baillie A.; Green M.A.; Plochocka P.; Stranks S.D.
发表日期	2017
ISSN	17545692
起始页码	1358
结束页码	1366
卷号	10 期号:6
英文摘要	Despite the remarkable progress in the performance of devices based on the lead halide perovskite semiconductor family, there is still a lack of consensus on their fundamental photophysical properties. Here, using magneto-optical transmission spectroscopy we elucidate the impact of the microstructure on the Coulomb interaction between photo-created electron-hole pairs in methylammonium lead triiodide (MAPbI3) and the triple-cation lead mixed-halide composition, Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3 (Cs: cesium, MA: methylammonium, FA: formamidinium) by investigating thin films with a wide range of grain sizes from tens of nanometers to microns. At low temperatures, in which thermal fluctuations of the interactions are frozen and the rotational disorder of the organic cation is negligible, the exciton binding energy and reduced effective mass of carriers remain effectively unchanged with grain size. We conclude that the microstructure plays a negligible role in the Coulomb interaction of the photo-created electron-hole pairs, in contrast to previous reports. This renewed understanding of the relationship between these fundamental electronic properties and the microstructure is critical for future fundamental studies and improving device design. © The Royal Society of Chemistry 2017.
英文关键词	Binding energy; Cesium; Coulomb interactions; Electronic properties; Excitons; Grain size and shape; Lead; Light transmission; Perovskite; Positive ions; Semiconductor devices; Electron hole pairs; Electron-hole interactions; Exciton-binding energy; Fundamental studies; Performance of devices; Photophysical properties; Rotational disorder; Thermal fluctuations; Microstructure; cation; electron; halide; lead; microstructure; performance assessment; perovskite; semiconductor industry
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/190479
作者单位	Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia; Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA, 143 Avenue de Rangueil, Toulouse, 31400, France; Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia; Institute of Experimental Physics, University of Warsaw, Pasteura 5, Warsaw, 02-093, Poland; Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge, CB3 0HE, United Kingdom; Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX1 3PU, United Kingdom
推荐引用方式 GB/T 7714	Mahboubi Soufiani A.,Yang Z.,Young T.,et al. Impact of microstructure on the electron-hole interaction in lead halide perovskites[J],2017,10(6).
APA	Mahboubi Soufiani A..,Yang Z..,Young T..,Miyata A..,Surrente A..,...&Stranks S.D..(2017).Impact of microstructure on the electron-hole interaction in lead halide perovskites.Energy & Environmental Science,10(6).
MLA	Mahboubi Soufiani A.,et al."Impact of microstructure on the electron-hole interaction in lead halide perovskites".Energy & Environmental Science 10.6(2017).