气候变化领域集成服务门户(CCPortal): Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells

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DOI	10.1039/c9ee00476a
	Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells
	Ferdani D.W.; Pering S.R.; Ghosh D.; Kubiak P.; Walker A.B.; Lewis S.E.; Johnson A.L.; Baker P.J.; Islam M.S.; Cameron P.J.
发表日期	2019
ISSN	1754-5692
起始页码	2264
结束页码	2272
卷号	12 期号:7
英文摘要	Halide perovskite solar cells containing a mixture of A-site cations are attracting considerable interest due to their improved stability and high power conversion efficiencies. Ionic transport is known to be an important predictor of perovskite behaviour, but the impact of partial A-site substitution on iodide ion diffusion is poorly understood. Here, we combine ab initio modelling, impedance spectroscopy and muon spin relaxation to investigate the effect on iodide ion transport of incorporating a low concentration of each of seven different sized cations (from small rubidium to large guanidinium) into methylammonium lead iodide. Experimental and simulation results are in good agreement, indicating that these cation substitutions increase the activation energy for iodide ion diffusion. We show for the first time that partial guanidinium substitution into methylammonium lead iodide strongly suppresses iodide ion transport. The insights gained from this multi-technique study are important for the future design of mixed-cation perovskite solar cells with enhanced performance. © The Royal Society of Chemistry 2019.
语种	英语
scopus关键词	Activation energy; Iodine compounds; Layered semiconductors; Perovskite; Perovskite solar cells; Positive ions; A-site substitutions; Ab initio modelling; Cation substitutions; High power conversion; Impedance spectroscopy; Ionic transports; Low concentrations; Muon spin relaxation; Lead compounds; activation energy; cation; detection method; energy efficiency; experimental study; fuel cell; inorganic compound; modeling; performance assessment; perovskite; simulation
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162452
作者单位	Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom; Department of Physics, University of Bath, Bath, BA2 7AY, United Kingdom; ISIS Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
推荐引用方式 GB/T 7714	Ferdani D.W.,Pering S.R.,Ghosh D.,et al. Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells[J],2019,12(7).
APA	Ferdani D.W..,Pering S.R..,Ghosh D..,Kubiak P..,Walker A.B..,...&Cameron P.J..(2019).Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells.Energy and Environmental Science,12(7).
MLA	Ferdani D.W.,et al."Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells".Energy and Environmental Science 12.7(2019).