气候变化领域集成服务门户(CCPortal): Cementitious grain-boundary passivation for flexible perovskite solar cells with superior environmental stability and mechanical robustness

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DOI	10.1016/j.scib.2020.10.023
	Cementitious grain-boundary passivation for flexible perovskite solar cells with superior environmental stability and mechanical robustness
	Hu X.; Meng X.; Yang X.; Huang Z.; Xing Z.; Li P.; Tan L.; Su M.; Li F.; Chen Y.; Song Y.
发表日期	2021
ISSN	20959273
起始页码	527
结束页码	535
卷号	66 期号:6
英文摘要	The power conversion effciency (PCE) of flexible perovskite solar cells (PSCs) has increased rapidly, while the mechanical flexibility and environmental stability are still far from satisfactory. Previous studies show the environmental degradation and ductile cracks of perovskite films usually begin at the grain boundaries (GBs). Herein, sulfonated graphene oxide (s-GO) is employed to construct a cementitious GBs by interacting with the [PbI6]4– at GBs. The resultant s-GO-[PbI6]4– complex can effectively passivate the defects of vacant iodine, and the devices with s-GO exhibit remarkable waterproofness and flexibility due to the tough and water-insoluble GBs. The champion PCE of 20.56% (1.01 cm2) in a device treated with s-GO is achieved. This device retains 90% of its original PCE after 180 d stored in the ambient condition, as well as over 80% retention after 10,000 bending cycles at a curvature radius of 3 mm. © 2020 Science China Press
关键词	Cementitious grain boundary Mechanical robustness Perovskites solar cells Sulfonated graphene oxide
英文关键词	Grain boundaries; Graphene; Passivation; Perovskite; Ambient conditions; Curvature radii; Environmental stability; Mechanical flexibility; Mechanical robustness; Perovskite films; Power conversion effciency; Waterproofness; Perovskite solar cells
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207427
作者单位	College of Chemistry/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, Nanchang, 330031, China; Department of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Key Laboratory of Green Printing, Institute of Chemistry Chinese Academy of Sciences, Beijing, 100190, China; Institute of Advanced Scientific Research (iASR), Jiangxi Normal University, Nanchang, 330022, China
推荐引用方式 GB/T 7714	Hu X.,Meng X.,Yang X.,et al. Cementitious grain-boundary passivation for flexible perovskite solar cells with superior environmental stability and mechanical robustness[J],2021,66(6).
APA	Hu X..,Meng X..,Yang X..,Huang Z..,Xing Z..,...&Song Y..(2021).Cementitious grain-boundary passivation for flexible perovskite solar cells with superior environmental stability and mechanical robustness.Science Bulletin,66(6).
MLA	Hu X.,et al."Cementitious grain-boundary passivation for flexible perovskite solar cells with superior environmental stability and mechanical robustness".Science Bulletin 66.6(2021).