Integrated molecular, morphological and interfacial engineering towards highly efficient and stable solution-processed small molecule solar cells

	Integrated molecular, morphological and interfacial engineering towards highly efficient and stable solution-processed small molecule solar cells
	Min, Jie 1; Luponosov, Yuriy N.2; Gasparini, Nicola 1; Xue, Lingwei 3; Drozdov, Fedor V.2; Peregudova, Svetlana M.4; Dmitryakov, Petr V.5; Gerasimov, Kirill L.6; Anokhin, Denis V.6,7; Zhang, Zhi-Guo 3
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2015
卷号	3 期号:45 页码:22695-22707
英文摘要	The synthesis of a series of A-pi-D-pi- A oligomers bearing coplanar electron-donating dithieno[ 3,2-b:2',3'-d] silole (DTS) unit linked through bithiophene pi-bridges with the electron-withdrawing alkyldicyanovinyl (alkyl-DCV) groups is described. This study demonstrates a systematic investigation of structure-property relationships in this type of oligomer and shows obvious benefits of alkyl-DCV groups as compared to the commonly used DCV ones, in terms of elaboration of high performance organic solar cells (OSCs). Considerable efforts have been made to improve the power conversion efficiency (PCE) of oligomer-based OSCs by diverse strategies including fine-tuning of the oligomer properties via variation of their terminal and central alkyl chains, blend morphology control via solvent vapor annealing (SVA) treatment, and surface modification via interfacial engineering. These efforts allowed achieving PCEs of up to 6.4% for DTS(Oct)(2)-(2T- DCV- Me)(2) blended with PC70BM. Further morphological investigations demonstrated that the usage of SVA treatment indeed effectively results in increased absorption and ordering of the BHJ composite, with the only exception for the most soluble oligomer DTS(Oct)(2)-(2T- DCV-Hex)(2). Besides, a detailed study analyzed the charge transport properties and recombination loss mechanisms for these oligomers. This study not only revealed the importance of integrated alkyl chain engineering on gaining morphological control for high performance OSCs, but also exhibited a clear correlation between molecular ordering and charge carrier mobility respective to carrier dynamics. These results outline a detailed strategy towards a rather complete characterization and optimization methodology for organic photovoltaic devices, thereby paving the way for researchers to easily find the performance parameters adapted for widespread applications.
收录类别	SCI
语种	英语
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/29251]
专题	化学研究所_有机固体实验室
作者单位	1.Univ Erlangen Nurnberg, I MEET, D-91058 Erlangen, Germany 2.Russian Acad Sci, Enikolopov Inst Synthet Polymer Mat, Moscow 117393, Russia 3.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China 4.Russian Acad Sci, Nesmeyanov Inst Organoelement Cpds, Moscow 119991, Russia 5.Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia 6.Moscow MV Lomonosov State Univ, Fac Fundamental Phys & Chem Engn, Moscow 119991, Russia 7.Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Region, Russia 8.CNRS UMR7361, Inst Sci Mat Mulhouse, F-68057 Mulhouse, France 9.Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia 10.Bavarian Ctr Appl Energy Res ZAE Bayern, D-91058 Erlangen, Germany
推荐引用方式 GB/T 7714	Min, Jie,Luponosov, Yuriy N.,Gasparini, Nicola,et al. Integrated molecular, morphological and interfacial engineering towards highly efficient and stable solution-processed small molecule solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(45):22695-22707.
APA	Min, Jie.,Luponosov, Yuriy N..,Gasparini, Nicola.,Xue, Lingwei.,Drozdov, Fedor V..,...&Brabec, Christoph J..(2015).Integrated molecular, morphological and interfacial engineering towards highly efficient and stable solution-processed small molecule solar cells.JOURNAL OF MATERIALS CHEMISTRY A,3(45),22695-22707.
MLA	Min, Jie,et al."Integrated molecular, morphological and interfacial engineering towards highly efficient and stable solution-processed small molecule solar cells".JOURNAL OF MATERIALS CHEMISTRY A 3.45(2015):22695-22707.