气候变化领域集成服务门户(CCPortal): Comprehensive control of voltage loss enables 11.7% efficient solid-state dye-sensitized solar cells

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DOI	10.1039/c8ee00661j
	Comprehensive control of voltage loss enables 11.7% efficient solid-state dye-sensitized solar cells
	Zhang W.; Wu Y.; Bahng H.W.; Cao Y.; Yi C.; Saygili Y.; Luo J.; Liu Y.; Kavan L.; Moser J.-E.; Hagfeldt A.; Tian H.; Zakeeruddin S.M.; Zhu W.-H.; Grätzel M.
发表日期	2018
ISSN	17545692
起始页码	1779
结束页码	1787
卷号	11 期号:7
英文摘要	The relatively large voltage loss (Vloss) in excitonic type solar cells severely limits their power conversion efficiencies (PCEs). Here, we report a comprehensive control of Vloss through efficacious engineering of the sensitizer and redox mediator, making a breakthrough in the PCE of dye-sensitized solar cells (DSSCs). The targeted down-regulation of Vloss is successfully realized by three valid channels: (i) reducing the driving force of electron injection through dye molecular engineering, (ii) decreasing the dye regeneration overpotential through redox mediator engineering, and (iii) suppressing interfacial electron recombination. Significantly, the "trade-off" effect between the dye optical band gap and the open-circuit voltage (VOC) is minimized to a great extent, achieving a distinct enhancement in photovoltaic performance (PCE > 11.5% with VOC up to 1.1 V) for liquid junction cells. The solidification of the best-performing device leads to a PCE of 11.7%, which is so far the highest efficiency obtained for solid-state DSSCs. Our work inspires further development in highly efficient excitonic solar cells by comprehensive control of Vloss. © 2018 The Royal Society of Chemistry.
英文关键词	Cell engineering; Dye-sensitized solar cells; Economic and social effects; Efficiency; Electron injection; Energy gap; Open circuit voltage; Photovoltaic effects; Comprehensive controls; Electron recombinations; Excitonic solar cells; Liquid junctions; Molecular engineering; Photovoltaic performance; Power conversion efficiencies; Solid-state dye-sensitized solar cells; Solar cells; control system; efficiency measurement; energy efficiency; equipment; fuel cell; performance assessment; photovoltaic system; solidification
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/190200
作者单位	Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China; Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland; Photochemical Dynamics Group, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland; Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland; J. Heyrovsky Institute of Physical Chemistry, Prague, 18223, Czech Republic
推荐引用方式 GB/T 7714	Zhang W.,Wu Y.,Bahng H.W.,et al. Comprehensive control of voltage loss enables 11.7% efficient solid-state dye-sensitized solar cells[J],2018,11(7).
APA	Zhang W..,Wu Y..,Bahng H.W..,Cao Y..,Yi C..,...&Grätzel M..(2018).Comprehensive control of voltage loss enables 11.7% efficient solid-state dye-sensitized solar cells.Energy & Environmental Science,11(7).
MLA	Zhang W.,et al."Comprehensive control of voltage loss enables 11.7% efficient solid-state dye-sensitized solar cells".Energy & Environmental Science 11.7(2018).