气候变化领域集成服务门户(CCPortal): Interfacial benzenethiol modification facilitates charge transfer and improves stability of cm-sized metal halide perovskite solar cells with up to 20% efficiency

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DOI	10.1039/c8ee00754c
	Interfacial benzenethiol modification facilitates charge transfer and improves stability of cm-sized metal halide perovskite solar cells with up to 20% efficiency
	Lu J.; Lin X.; Jiao X.; Gengenbach T.; Scully A.D.; Jiang L.; Tan B.; Sun J.; Li B.; Pai N.; Bach U.; Simonov A.N.; Cheng Y.-B.
发表日期	2018
ISSN	17545692
起始页码	1880
结束页码	1889
卷号	11 期号:7
英文摘要	Metal halide perovskite solar cells (PSC) exhibit outstanding power conversion efficiencies when fabricated as mm-sized devices, but creation of high-performing large-area PSCs that are stable under operating conditions on a sufficiently long timescale still presents a significant challenge. We demonstrate herein that modification of the interface between the perovskite and a spiro-OMeTAD hole-transporting material with commercially available para-substituted benzenethiol molecules facilitates fabrication of cm-sized PSCs with both improved efficiency and stability. Comprehensive analysis using specialised and conventional physical characterisation techniques has been undertaken to demonstrate that band alignment at the perovskite surface can be tuned to improve the solar cell efficiency via adsorption of benzenethiols with a significant dipole moment. Moreover, modification of the perovskite with cyano-substituted benzenethiol enhances charge extraction and reduces charge recombination in the devices. These effects enable improvements in the power conversion efficiency of PSCs from 19.0 to 20.2% and from 18.5 to 19.6% under 1 sun AM 1.5G irradiation with 0.16 and 1.00 cm2 apertures, respectively. Most importantly, benzenethiol-modified perovskite solar cells retain more than 80% of the initial performance after 185 h of continuous operation at 50% relative humidity and 50 °C device temperature under 1 sun irradiation, while devices with no interfacial modification undergo continuous deterioration down to 35% of the initial efficiency. These significant improvements are provided by a very simple and highly reproducibile modification procedure that can be readily adopted in other types of PSCs. © 2018 The Royal Society of Chemistry.
英文关键词	Charge transfer; Conversion efficiency; Efficiency; Irradiation; Metal halides; Perovskite; Perovskite solar cells; Charge recombinations; Comprehensive analysis; Continuous operation; Hole-transporting materials; Interfacial modification; Physical characterisation; Power conversion efficiencies; Solar cell efficiencies; Solar cells; absorption coefficient; detection method; efficiency measurement; energy efficiency; equipment; fuel cell; operations technology; perovskite; relative humidity; solar radiation; temperature effect
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/190199
作者单位	School of Chemistry, Monash UniversityVIC 3800, Australia; Department of Chemical Engineering, Monash UniversityVIC 3800, Australia; Department of Materials Science and Engineering, Monash UniversityVIC 3800, Australia; Australian Synchrotron, ANSTO, 800 Blackburn Rd, Clayton, VIC 3168, Australia; CSIRO Manufacturing, Clayton, VIC 3168, Australia; ARC, Centre of Excellence for Exciton Science, Monash UniversityVIC 3800, Australia; ARC, Centre of Excellence for Electromaterials Science, Monash UniversityVIC 3800, Australia; State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
推荐引用方式 GB/T 7714	Lu J.,Lin X.,Jiao X.,et al. Interfacial benzenethiol modification facilitates charge transfer and improves stability of cm-sized metal halide perovskite solar cells with up to 20% efficiency[J],2018,11(7).
APA	Lu J..,Lin X..,Jiao X..,Gengenbach T..,Scully A.D..,...&Cheng Y.-B..(2018).Interfacial benzenethiol modification facilitates charge transfer and improves stability of cm-sized metal halide perovskite solar cells with up to 20% efficiency.Energy & Environmental Science,11(7).
MLA	Lu J.,et al."Interfacial benzenethiol modification facilitates charge transfer and improves stability of cm-sized metal halide perovskite solar cells with up to 20% efficiency".Energy & Environmental Science 11.7(2018).