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Phase Pure 2D Perovskite for High-Performance 2D-3D Heterostructured Perovskite Solar Cells
Pengwei Li1,2; Yiqiang Zhang3; Chao Liang4; Guichuan Xing4; Xiaolong Liu2; Fengyu Li1; Xiaotao Liu3; Xiaotian Hu1,2; Guosheng Shao3; Yanlin Song1
2018-12-27
Source PublicationAdvanced Materials
ISSN0935-9648
Volume30Issue:52
Other Abstract

Three-dimensional (3D) metal-halide perovskite solar cells (PSCs) have demonstrated exceptional high efficiency. However, instability of the 3D perovskite is the main challenge for industrialization. Incorporation of some long organic cations into perovskite crystal to terminate the lattice, and function as moisture and oxygen passivation layer and ion migration blocking layer, is proven to be an effective method to enhance the perovskite stability. Unfortunately, this method typically sacrifices charge-carrier extraction efficiency of the perovskites. Even in 2D-3D vertically aligned heterostructures, a spread of bandgaps in the 2D due to varying degrees of quantum confinement also results in charge-carrier localization and carrier mobility reduction. A trade-off between the power conversion efficiency and stability is made. Here, by introducing 2D C6H18N2O2PbI4 (EDBEPbI4) microcrystals into the precursor solution, the grain boundaries of the deposited 3D perovskite film are vertically passivated with phase pure 2D perovskite. The phases pure (inorganic layer number n = 1) 2D perovskite can minimize photogenerated charge-carrier localization in the low-dimensional perovskite. The dominant vertical alignment does not affect charge-carrier extraction. Therefore, high-efficiency (21.06%) and ultrastable (retain 90% of the initial efficiency after 3000 h in air) planar PSCs are demonstrated with these 2D-3D mixtures.

Keyword2d-3d Heterojunctions Carrier Dynamics Diffusion Length Perovskite Solar Cells Stability
DOIhttps://doi.org/10.1002/adma.201805323
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000454124800030
PublisherWILEY-V C H VERLAG GMBH
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Cited Times [WOS]:24   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorGuichuan Xing; Yanlin Song
Affiliation1.Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, ICCAS, Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, BNLMS, Beijing, 100190 P. R. China
2.University of Chinese Academy of Sciences, Beijing, 100049 P. R. China
3.State Centre for International Cooperation on Designer Low-Carbon and Environmental Material (SCICDLCEM), School of Materials Science and Engineering, ZhengZhou University, ZhengZhou 450001, P. R. China
4.Joint Key Laboratory of the Ministry of EducationInstitute of Applied Physics and Materials EngineeringUniversity of MacauAvenida da UniversidadeTaipa, Macau 999078, P. R. China
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Pengwei Li,Yiqiang Zhang,Chao Liang,et al. Phase Pure 2D Perovskite for High-Performance 2D-3D Heterostructured Perovskite Solar Cells[J]. Advanced Materials,2018,30(52).
APA Pengwei Li.,Yiqiang Zhang.,Chao Liang.,Guichuan Xing.,Xiaolong Liu.,...&Yanlin Song.(2018).Phase Pure 2D Perovskite for High-Performance 2D-3D Heterostructured Perovskite Solar Cells.Advanced Materials,30(52).
MLA Pengwei Li,et al."Phase Pure 2D Perovskite for High-Performance 2D-3D Heterostructured Perovskite Solar Cells".Advanced Materials 30.52(2018).
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