Solution-Processable Organic Molecule for High-Performance Organic Solar Cells with Low Acceptor Content

	Solution-Processable Organic Molecule for High-Performance Organic Solar Cells with Low Acceptor Content
	Wang, Kun 1; Guo, Bing 1; Xu, Zhuo 1; Guo, Xia 1; Zhang, Maojie 1; Li, Yongfang 1,2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2015-11-11
卷号	7 期号:44 页码:24686-24693
关键词	organic solar cells D2-A-D1-A-D2 organic molecules coplanarity crystallization active layer with low fullerene content
英文摘要	A new planar D2-A-D1-A-D2 structured organic molecule with bithienyl benzodithiophene (BDT) as central donor unit D1 and fluorine-substituted benzothiadiazole (BTF) as acceptor unit and alkyl-dithiophene as end group and donor unit D2, BDT-BTF, was designed and synthesized for the application as donor material in organic solar cells (OSCs). BDT-BTF shows a broad absorption in visible region, suitable highest occupied molecular orbital energy level of -5.20 eV, and high hole mobility of 1.07 X 10(-2) cm(2)/(V s), benefitted from its high coplanarity and strong crystallinity. The OSCs based on BDT-BTF as donor (D) and PC71BM as acceptor (A) at a D/A weight ratio of 3:1 without any extra treatment exhibit high photovoltaic performance with V-oc of 0.85 V, J(sc) of 10.48 mA/cm(2), FF of 0.66, and PCE of 5.88%. The morphological study by transmission electron microscopy reveals that the blend of BDT-BTF and PC71BM (3:1, w/w) possesses an appropriate interpenetrating D/A network for the exciton separation and charge carrier transport, which agrees well with the good device performance. The optimized D/A weight ratio of 3:1 is the lowest acceptor content in the active layer reported so far for the high-performance OSCs, and the organic molecules with the molecular structure like BDT-BTF could be promising high-performance donor materials in solution-processable OSCs.
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/121111/29294]
专题	化学研究所_有机固体实验室
作者单位	1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China 2.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Kun,Guo, Bing,Xu, Zhuo,et al. Solution-Processable Organic Molecule for High-Performance Organic Solar Cells with Low Acceptor Content[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(44):24686-24693.
APA	Wang, Kun,Guo, Bing,Xu, Zhuo,Guo, Xia,Zhang, Maojie,&Li, Yongfang.(2015).Solution-Processable Organic Molecule for High-Performance Organic Solar Cells with Low Acceptor Content.ACS APPLIED MATERIALS & INTERFACES,7(44),24686-24693.
MLA	Wang, Kun,et al."Solution-Processable Organic Molecule for High-Performance Organic Solar Cells with Low Acceptor Content".ACS APPLIED MATERIALS & INTERFACES 7.44(2015):24686-24693.