气候变化领域集成服务门户(CCPortal): Kinetic and material properties of interfaces governing slow response and long timescale phenomena in perovskite solar cells

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DOI	10.1039/c9ee00802k
	Kinetic and material properties of interfaces governing slow response and long timescale phenomena in perovskite solar cells
	Wang H.; Guerrero A.; Bou A.; Al-Mayouf A.M.; Bisquert J.
发表日期	2019
ISSN	17545692
起始页码	2054
结束页码	2079
卷号	12 期号:7
英文摘要	The last decade has witnessed the skyrocketing progress of perovskite solar cells (PSCs) with their current world record energy conversion efficiency reaching over 24%. Nevertheless, the unsatisfactory device stability and current-voltage hysteresis normally observed with most PSCs under operational conditions are the bottlenecks that restrict the application of this photovoltaic technology in practice. It is known that interface properties are at the heart of an electronic device's performance. Understanding the interactions occurring at the interfaces is important to design and develop effective strategies to address these issues associated with PSCs. In this review, we summarize the most recent advancement in understanding the interfaces in PSCs, in particular the interfaces of perovskite/electron transport layer (ETL) and perovskite/hole transport layer (HTL). Our main interest is to provide guidance on the immense complexity of dynamic behaviours of PSCs, particularly concerning the slowest time scale measurements that have a maximum impact on the actual operation of the solar cell. Therefore we address the separation of phenomena such as ion migration, interfacial charge accumulation, and surface electrochemical reactions. We provide an analysis of electrooptical small perturbation methods, including impedance spectroscopy (IS), and a description of negative capacitance, as well as spatially resolved techniques. The impact of different contacts with variable morphology and composition on the perovskite/ETL and perovskite/HTL interface properties reflected by the kinetics of charge transport and chemical reactions is discussed to provide deep insights into the operational mechanism of PSCs. We reach the conclusion that a number of measurements observed in the time frame of 0.1 to 10 s are due to the slow response of the ionic double layer, and we identify the asymmetric surface charge and discharge processes responsible for such kinetic effects. We also suggest the research direction regarding new approaches to understanding interfacial reactions of PSCs to achieve high device performance in the future. © The Royal Society of Chemistry 2019.
英文关键词	Capacitance; Conversion efficiency; Kinetics; Morphology; Perovskite; Perturbation techniques; Surface reactions; Electrochemical reactions; Impedance spectroscopy; Morphology and composition; Negative capacitance; Operational conditions; Operational mechanism; Photovoltaic technology; Small perturbation method; Perovskite solar cells; chemical reaction; detection method; electronic equipment; energy efficiency; fuel cell; performance assessment; perovskite; photovoltaic system; reaction kinetics; technological development
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/189878
作者单位	School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4001, Australia; Institute of Advanced Materials, Universitat Jaume i, Castello, 12006, Spain; Electrochemical Sciences Research Department (ESRC), Department of Chemistry, Science College, King Saud University, Riyadh, Saudi Arabia
推荐引用方式 GB/T 7714	Wang H.,Guerrero A.,Bou A.,et al. Kinetic and material properties of interfaces governing slow response and long timescale phenomena in perovskite solar cells[J],2019,12(7).
APA	Wang H.,Guerrero A.,Bou A.,Al-Mayouf A.M.,&Bisquert J..(2019).Kinetic and material properties of interfaces governing slow response and long timescale phenomena in perovskite solar cells.Energy & Environmental Science,12(7).
MLA	Wang H.,et al."Kinetic and material properties of interfaces governing slow response and long timescale phenomena in perovskite solar cells".Energy & Environmental Science 12.7(2019).