气候变化领域集成服务门户(CCPortal): Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cells

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DOI	10.1039/c6ee03352k
	Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cells
	Domanski K.; Roose B.; Matsui T.; Saliba M.; Turren-Cruz S.-H.; Correa-Baena J.-P.; Carmona C.R.; Richardson G.; Foster J.M.; De Angelis F.; Ball J.M.; Petrozza A.; Mine N.; Nazeeruddin M.K.; Tress W.; Grätzel M.; Steiner U.; Hagfeldt A.; Abate A.
发表日期	2017
ISSN	17545692
起始页码	604
结束页码	613
卷号	10 期号:2
英文摘要	Perovskites have been demonstrated in solar cells with a power conversion efficiency of well above 20%, which makes them one of the strongest contenders for next generation photovoltaics. While there are no concerns about their efficiency, very little is known about their stability under illumination and load. Ionic defects and their migration in the perovskite crystal lattice are some of the most alarming sources of degradation, which can potentially prevent the commercialization of perovskite solar cells (PSCs). In this work, we provide direct evidence of electric field-induced ionic defect migration and we isolate their effect on the long-term performance of state-of-the-art devices. Supported by modelling, we demonstrate that ionic defects, migrating on timescales significantly longer (above 103 s) than what has so far been explored (from 10-1 to 102 s), abate the initial efficiency by 10-15% after several hours of operation at the maximum power point. Though these losses are not negligible, we prove that the initial efficiency is fully recovered when leaving the device in the dark for a comparable amount of time. We verified this behaviour over several cycles resembling day/night phases, thus probing the stability of PSCs under native working conditions. This unusual behaviour reveals that research and industrial standards currently in use to assess the performance and the stability of solar cells need to be adjusted for PSCs. Our work paves the way for much needed new testing protocols and figures of merit specifically designed for PSCs. © The Royal Society of Chemistry 2017.
英文关键词	Behavioral research; Defects; Efficiency; Electric fields; Industrial research; Perovskite; Perovskite solar cells; Solar power generation; Electric field induced; Industrial standards; Long term performance; Maximum power point; Perovskite crystal; Power conversion efficiencies; Stability of solar cells; State-of-the-art devices; Solar cells; cation; commercialization; crystal; degradation; electric field; energy efficiency; performance assessment; perovskite; photovoltaic system; solar power
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190528
作者单位	Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland; Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland; Advanced Research Division, Panasonic Corporation, 1006, Oaza Kadoma, Kadoma City, Osaka 571-8501, Japan; Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland; Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland; Mathematical Sciences, University of SouthamptonSO17 1BJ, United Kingdom; Department of Mathematics, University of Portsmouth, Portsmouth, PO1 2UP, United Kingdom; Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), CNR-ISTM, Via Elce di Sotto 8, Perugia, 06123, Italy; CompuNet, Istituto It...
推荐引用方式 GB/T 7714	Domanski K.,Roose B.,Matsui T.,et al. Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cells[J],2017,10(2).
APA	Domanski K..,Roose B..,Matsui T..,Saliba M..,Turren-Cruz S.-H..,...&Abate A..(2017).Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cells.Energy & Environmental Science,10(2).
MLA	Domanski K.,et al."Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cells".Energy & Environmental Science 10.2(2017).