globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.10.023
论文题名:
Cementitious grain-boundary passivation for flexible perovskite solar cells with superior environmental stability and mechanical robustness
作者: Hu X.; Meng X.; Yang X.; Huang Z.; Xing Z.; Li P.; Tan L.; Su M.; Li F.; Chen Y.; Song Y.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期:6
起始页码: 527
结束页码: 535
语种: 英语
中文关键词: 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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170271
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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

Recommended Citation:
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]. Science Bulletin,2021-01-01,66(6)
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