气候变化领域集成服务门户(CCPortal): Isothermally crystallized perovskites at room-temperature

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DOI	10.1039/d0ee01967d
	Isothermally crystallized perovskites at room-temperature
	Wang K.; Wu C.; Hou Y.; Yang D.; Ye T.; Yoon J.; Sanghadasa M.; Priya S.
发表日期	2020
ISSN	1754-5692
起始页码	3412
结束页码	3422
卷号	13 期号:10
英文摘要	The solution processability of photoactive halide perovskites differentiates them from traditional inorganic semiconducting materials that require multiple post-processing steps such as thermal/vacuum/blowing- and solvent-assisted treatment. Here we report a technical breakthrough of isothermally crystallizing high-quality perovskite films at room-temperature (RT) without the necessity of any post-processing. This process takes advantage of our discovery of a metastable intermediate of lower-dimensionality formed by amine-assisted crystallographic lattice expansion from an initial three-dimensional perovskite. Using in situ optoelectrical/chemical and ex situ structural characterizations, a detailed understanding of the low-dimensional metastable intermediate is developed. In conjunction with the metastable intermediate, the rapid evaporation of the solvent and amine facilitates ultra-fast crystallization at RT within seconds. This RT rapidly synthesized perovskite film exhibits a carrier diffusion length of 2.9 µm and {00l} preferred orientation with an ultrahigh Lotgering factor of 97%. These films are highly compatible to conventional or inverted devices, demonstrating 22.3% and 23.1% power conversion efficiencies, respectively. © The Royal Society of Chemistry.
语种	英语
scopus关键词	Isotherms; Carrier diffusion length; Crystallographic lattices; Metastable intermediate; Power conversion efficiencies; Semiconducting materials; Solution processability; Solvent assisted treatments; Structural characterization; Perovskite
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162817
作者单位	Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, United States; Materials Research Institute, Pennsylvania State University, University Park, PA 16802, United States; Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, Wuhan, 430062, China; U.S. Army Combat Capabilities Development Command Aviation and Missile Center, Redstone Arsenal Alabama35898, United States
推荐引用方式 GB/T 7714	Wang K.,Wu C.,Hou Y.,et al. Isothermally crystallized perovskites at room-temperature[J],2020,13(10).
APA	Wang K..,Wu C..,Hou Y..,Yang D..,Ye T..,...&Priya S..(2020).Isothermally crystallized perovskites at room-temperature.Energy and Environmental Science,13(10).
MLA	Wang K.,et al."Isothermally crystallized perovskites at room-temperature".Energy and Environmental Science 13.10(2020).