气候变化领域集成服务门户(CCPortal): Optimisation of processing solvent and molecular weight for the production of green-solvent-processed all-polymer solar cells with a power conversion efficiency over 9%

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DOI	10.1039/c7ee00619e
	Optimisation of processing solvent and molecular weight for the production of green-solvent-processed all-polymer solar cells with a power conversion efficiency over 9%
	Fan B.; Ying L.; Wang Z.; He B.; Jiang X.-F.; Huang F.; Cao Y.
发表日期	2017
ISSN	17545692
起始页码	1243
结束页码	1251
卷号	10 期号:5
英文摘要	Increasing interest has been devoted to developing high-performance all-polymer solar cells (all-PSCs) owing to their specific advantages in light absorption and long-term stability. In this work, we systematically investigated the synergistic effects of processing solvents and molecular weight on the photovoltaic performance of all-PSCs, which consist of an n-type polymer N2200 and a p-type wide bandgap polymer PTzBI that are made up of benzodithiophene and imide-functionalized benzotriazole units. It is noted that increasing the molecular weight of N2200 can simultaneously enhance exciton generation and dissociation, reduce bimolecular recombination, and facilitate charge extraction. The films processed with the environmentally-friendly solvent 2-methyl-tetrahydrofuran (MeTHF) exhibit a more favourable film morphology than those processed with commonly used halogenated solvents. The all-PSC consisting of the high molecular weight N2200 and PTzBI processed with the environmentally friendly solvent MeTHF presents a remarkable power conversion efficiency of 9.16%, which is the highest value so far observed for all-PSCs. Of particular interest is that the PCE remains 6.37% with the active layer thickness of 230 nm. These observations imply the great promise of the developed all-PSCs for practical applications toward high-throughput roll-to-roll technology. © 2017 The Royal Society of Chemistry.
英文关键词	Conversion efficiency; Efficiency; Halogenation; Molecular weight; Organic solvents; Photovoltaic effects; Polymers; Solar cells; Solvents; 2-methyltetrahydrofuran; All-Polymer Solar Cells; Bimolecular recombination; Environmentally friendly solvents; Halogenated solvents; High molecular weight; Photovoltaic performance; Power conversion efficiencies; Polymer solar cells; efficiency measurement; fuel cell; molecular analysis; optimization; performance assessment; photovoltaic system; polymer; solvent
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/190558
作者单位	Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China
推荐引用方式 GB/T 7714	Fan B.,Ying L.,Wang Z.,et al. Optimisation of processing solvent and molecular weight for the production of green-solvent-processed all-polymer solar cells with a power conversion efficiency over 9%[J],2017,10(5).
APA	Fan B..,Ying L..,Wang Z..,He B..,Jiang X.-F..,...&Cao Y..(2017).Optimisation of processing solvent and molecular weight for the production of green-solvent-processed all-polymer solar cells with a power conversion efficiency over 9%.Energy & Environmental Science,10(5).
MLA	Fan B.,et al."Optimisation of processing solvent and molecular weight for the production of green-solvent-processed all-polymer solar cells with a power conversion efficiency over 9%".Energy & Environmental Science 10.5(2017).