Dynamical Transformation of Two-Dimensional Perovskites with Alternating Cations in the Interlayer Space for High-Performance Photovoltaics.

Autor:	Zhang Y; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China., Wang P; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China., Tang MC; KAUST Solar Center (KSC) and Physical Science and Engineering Division (PSE) , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Saudi Arabia., Barrit D; KAUST Solar Center (KSC) and Physical Science and Engineering Division (PSE) , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Saudi Arabia., Ke W; Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States., Liu J; Dalian National Laboratory for Clean Energy, iChEM , Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023 , China., Luo T; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China., Liu Y; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China., Niu T; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China., Smilgies DM; Cornell High Energy Synchrotron Source , Cornell University , Ithaca , New York 14850 , United States., Yang Z; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China., Liu Z; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China., Jin S; Dalian National Laboratory for Clean Energy, iChEM , Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023 , China., Kanatzidis MG; Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States., Amassian A; KAUST Solar Center (KSC) and Physical Science and Engineering Division (PSE) , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Saudi Arabia.; Department of Materials Science and Engineering , North Carolina State University , Raleigh , North Carolina 27695 , United States., Liu SF; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China.; Dalian National Laboratory for Clean Energy, iChEM , Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023 , China., Zhao K; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China.
Jazyk:	angličtina
Zdroj:	Journal of the American Chemical Society [J Am Chem Soc] 2019 Feb 13; Vol. 141 (6), pp. 2684-2694. Date of Electronic Publication: 2019 Jan 29.
DOI:	10.1021/jacs.8b13104
Abstrakt:	The two-dimensional (2D) perovskites stabilized by alternating cations in the interlayer space (ACI) define a new type of structure with different physical properties than the more common Ruddlesden-Popper counterparts. However, there is a lack of understanding of material crystallization in films and its influence on the morphological/optoelectronic properties and the final photovoltaic devices. Herein, we undertake in situ studies of the solidification process for ACI 2D perovskite (GA)(MA) n Pb n I 3 n+1 (⟨ n⟩ = 3) from ink to solid-state semiconductor, using solvent mixture of DMSO:DMF (1:10 v/v) as the solvent and link this behavior to solar cell devices. The in situ grazing-incidence X-ray scattering (GIWAXS) analysis reveals a complex journey through disordered sol-gel precursors, intermediate phases, and ultimately to ACI perovskites. The intermediate phases, including a crystalline solvate compound and the 2D GA 2 PbI 4 perovskite, provide a scaffold for the growth of the ACI perovskites during thermal annealing. We identify 2D GA 2 PbI 4 to be the key intermediate phase, which is strongly influenced by the deposition technique and determines the formation of the 1D GAPbI 3 byproducts and the distribution of various n phases of ACI perovskites in the final films. We also confirm the presence of internal charge transfer between different n phases through transient absorption spectroscopy. The high quality ACI perovskite films deposited from solvent mixture of DMSO:DMF (1:10 v/v) deliver a record power conversion efficiency of 14.7% in planar solar cells and significantly enhanced long-term stability of devices in contrast to the 3D MAPbI 3 counterpart.
Databáze:	MEDLINE
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