气候变化领域集成服务门户(CCPortal): Operando structure degradation study of PbS quantum dot solar cells

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DOI	10.1039/d1ee00832c
	Operando structure degradation study of PbS quantum dot solar cells
	Chen W.; Guo R.; Tang H.; Wienhold K.S.; Li N.; Jiang Z.; Tang J.; Jiang X.; Kreuzer L.P.; Liu H.; Schwartzkopf M.; Sun X.W.; Roth S.V.; Wang K.; Xu B.; Müller-Buschbaum P.
发表日期	2021
ISSN	17545692
起始页码	3420
结束页码	3429
卷号	14 期号:6
英文摘要	PbS quantum dot (QD) solar cells demonstrate great potential in solar energy conversion with a broad and flexible spectral response. Even though long-term storage stabilities of QD solar cells were reported in literature, the operation stability from a more practical aspect, to date, has been not yet investigated. Herein, we observe the structure degradation process of a PbS QD-ink based solar cell during the device operation. Simultaneously to probing the solar cell parameters, the overall structure evolutions of the QDs in both, active layer and hole transport layer of the solar cell are studied with grazing-incidence small- and wide-angle X-ray scattering (GISAXS/GIWAXS). We find a spontaneous decrease of the QD inter-dot distance with an increase in the spatial disorder in the active layer (PbX2-PbS QDs, X = I, and Br) during the operation induced degradation. Consequently, the structure disorder-induced broadening of the energy state distribution is responsible for the decrease in open-circuit voltageVocleading to the device degradation. These findings elucidate the origin of light-soaking as well as the structure degradation of QD ink-based solar cells and indicate that the stability of the device can be realized by the positional stabilization of the QDs in the QD solid. © The Royal Society of Chemistry 2021.
英文关键词	Energy conversion; IV-VI semiconductors; Lead compounds; Nanocrystals; Semiconductor quantum dots; Solar energy; Stabilization; X ray scattering; Hole transport layers; Long-term storage stability; Operation stability; Quantum dot solar cells; Small and wide angle x ray scatterings; Solar cell parameters; Structure degradation; Structure evolution; Solar cells; active layer; degradation; fuel cell; parameterization; quantum mechanics; scattering; spectral analysis
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/190647
作者单位	Physik Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, Garching, 85748, Germany; Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Department of Materials Science and Engineering, and Shenzhen Engineering Research and Development Center for Flexible Solar Cells, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China; Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, Hamburg, 22607, Germany; Key Laboratory of Energy Conversion and Storage Technologies (Southern University of Science and Technology), Ministry of Education, Shenzhen, 518055, China; KTH Royal Institute of Technology, Department of Fibre and Polymer Technology, Teknikringen 56-58, Stockholm, SE-100 44, Sweden; Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität Münche...
推荐引用方式 GB/T 7714	Chen W.,Guo R.,Tang H.,et al. Operando structure degradation study of PbS quantum dot solar cells[J],2021,14(6).
APA	Chen W..,Guo R..,Tang H..,Wienhold K.S..,Li N..,...&Müller-Buschbaum P..(2021).Operando structure degradation study of PbS quantum dot solar cells.Energy & Environmental Science,14(6).
MLA	Chen W.,et al."Operando structure degradation study of PbS quantum dot solar cells".Energy & Environmental Science 14.6(2021).