Thermally induced failure mechanisms in double and triple cations perovskite solar cells
Source abstract
Abstract
The control of the cation composition of formamidinium (FA), methylammonium (MA), and cesium (Cs) has been used to engineer significant improvements in organic–inorganic perovskite solar cells. However, the thermal stability of mixed-cation perovskite solar cells is not fully understood. In this work, we present the results of an experimental study of the stability of double-cation perovskites [(FAPbI3)0.97(MAPbBr3)0.03] [(FAMA)-perovskite solar cells (PSCs)] and triple-cation based-perovskites [Cs0.05(FA0.95MA0.05)0.95Pb(I0.95Br0.05)3] [(CsFAMA)-PSCs] operated between 40 and 60°C. The thermally induced changes in the film microstructure are elucidated via scanning electron microscopy and x-ray diffraction analyses, and these are related to changes in optoelectronic properties, charge transport, and current–voltage characteristics of (FAMA)-PSCs and (CsFAMA)-PSCs. The implications of the observed degradation mechanisms are also discussed for the future development of efficient and stable PSCs.
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Research context
OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Solid-state spectroscopy and crystallography
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering, African University of Science and Technology 1 , Km 10 Airport Road, P.M.B. 681 Garki-Abuja, Federal Capital Territory, Nigeria
Program in Materials Science and Engineering, Department of Mechanical Engineering, Worcester Polytechnic Institute 2 , 100 Institute Road, Worcester, Massachusetts 01609, USA
Department of Theoretical and Applied Physics, African University of Science and Technology 3 , Km 10 Airport Road, P.M.B. 681 Garki-Abuja, Federal Capital Territory, Nigeria
Department of Mechanical Engineering, Worcester Polytechnic Institute 4 , 100 Institute Road, Worcester, Massachusetts 01609, USA
Department of Material Science and Engineering, Alfred University 5 , Alfred, New York 14802, USA
6Centre for Cyber Physical Food, Energy and Water System (CCP-FEWS), Electrical and Electronic Engineering Science, University of Johannesburg, Johannesburg, South Africa
Funding
Pan African Materials Institute · Worcester Polytechnic Institute · African University of Science and Technology
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