Nonfullerene-Acceptor All-Small-Molecule Organic Solar Cells Based on Highly Twisted Perylene Bisimide with an Efficiency of over 6%

	Nonfullerene-Acceptor All-Small-Molecule Organic Solar Cells Based on Highly Twisted Perylene Bisimide with an Efficiency of over 6%
	Xin, Rui 1; Feng, Jiajing 2; Zeng, Cheng 2; Jiang, Wei 2; Zhang, Lei 1; Meng, Dong 2; Ren, Zhongjie 1; Wang, Zhaohui 2; Yan, Shouke 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2017-01-25
卷号	9 期号:3 页码:2739-2746
关键词	Nonfullerene All-small-molecule Organic Solar Cells Perylene Bisimide Twisted Conformation Nonfullerene Acceptor Solvent-vapor Annealing
英文摘要	Two twisted singly linked perylene bisimide (PBI) dimers with chalcogen bridges in the PBI cores, named C4,4-SdiPBI-S and C4,4-SdiPBI-Se, were synthesized as acceptors for nonfullerene all-small-molecule organic solar cells (NF all-SMSCs). A moderate-band-gap small-molecule DR3TBDTT used as the electron donor displayed complementary absorption with C4,4-SdiPBI-S and C4,4-SdiPBI-Se. It was found that solvent-vapor annealing (SVA) played a critical role in the photovoltaic performance in NF all-SMSCs, which improves the crystallinity of the donor and acceptors, promotes the proper phase segregation domain size, and therefore enhances charge transport. The power conversion efficiencies (PCEs) of NF all-SMSC devices based on DR3TBDTT/C4,4-SdiPBI-S and DR3TBDTT/C4,4-SdiPBI-Se increased from 2.52% to 5.81% (J(SC) = 11.12 mA cm(-2), V-OC = 0.91 V, and FF = 57.32%) and from 2.65% to 6.22% (J(SC) = 11.55 mA cm(-2), V-OC = 0.92 V, and FF = 58.72%), respectively, after exposure to chloroform vapor. The best efficiency of 6.22% is one of the highest PCEs for NF all-SMSC-based PBI acceptors so far. The studies illustrate that highly efficient NF all-SMSCs can be achieved by using a PBI acceptor with a suitable SVA process.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38067]
专题	化学研究所_有机固体实验室
作者单位	1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Xin, Rui,Feng, Jiajing,Zeng, Cheng,et al. Nonfullerene-Acceptor All-Small-Molecule Organic Solar Cells Based on Highly Twisted Perylene Bisimide with an Efficiency of over 6%[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(3):2739-2746.
APA	Xin, Rui.,Feng, Jiajing.,Zeng, Cheng.,Jiang, Wei.,Zhang, Lei.,...&Yan, Shouke.(2017).Nonfullerene-Acceptor All-Small-Molecule Organic Solar Cells Based on Highly Twisted Perylene Bisimide with an Efficiency of over 6%.ACS APPLIED MATERIALS & INTERFACES,9(3),2739-2746.
MLA	Xin, Rui,et al."Nonfullerene-Acceptor All-Small-Molecule Organic Solar Cells Based on Highly Twisted Perylene Bisimide with an Efficiency of over 6%".ACS APPLIED MATERIALS & INTERFACES 9.3(2017):2739-2746.