南方科技大学知识苑(SUSTech KC): Highly Efficient All-Polymer Solar Cells from a Dithieno[3,2-f:2′,3′-h]quinoxaline-Based Wide Band Gap Donor

题名	Highly Efficient All-Polymer Solar Cells from a Dithieno[3,2-f:2′,3′-h]quinoxaline-Based Wide Band Gap Donor
作者	Zhao，Tingxing1 ; Cao，Congcong1 ; Wang，Hengtao1 ; Shen，Xiangyu1 ; Lai，Hanjian1 ; Zhu，Yulin1 ; Chen，Hui1,2 ; Han，Liang1 ; Rehman，Tahir1 ; He，Feng1,3
通讯作者	He，Feng
发表日期	2021-12-28
DOI	10.1021/acs.macromol.1c01940
发表期刊	MACROMOLECULES 影响因子和分区
ISSN	0024-9297
EISSN	1520-5835
卷号	54 期号:24页码:11468-11477
摘要	It is challenging yet appealing for researchers to construct new polymer donors that can work cooperatively with the polymer acceptors and thus realize maximum power conversion efficiencies (PCEs) of all-polymer solar cells (PSCs). We have synthesized two dithieno[3,2-f:2′,3′-h]quinoxaline-based wide band gap donor polymers (PBQx-Me-TF and PBQx-H-TF) and a new γ-position based narrow band gap polymer acceptor: PBTIC-γ-TT. The temperature-dependent absorption spectra showed that removal of a weaker electron-donating methyl group in the donor polymer strengthened the aggregation and the absorption coefficients. The crystal structures showed that PBQx-H-TF had a closer π–π stacking distance of 3.33 Å when compared to the PBQx-Me-TF (3.40 Å). The smaller E offset (0.07 eV) between the donor PBQx-H-TF and acceptor PBTIC-γ-TT than that of PBQx-Me-TF/PBTIC-γ-TT (0.10 eV) provided a better hole transport. The PBQx-H-TF/PBTIC-γ-TT films showed a smaller total energy loss (0.574 eV) than the PBQx-Me-TF/PBTIC-γ-TT film (0.607 eV); hence, this molecular structure adjustment reduced the nonradiative energy loss. PBQx-H-TF also showed better miscibility with PBTIC-γ-TT with a smaller χ value of 0.25. In addition, a bicontinuous interpenetrating microstructure was observed in the active layer blend film (PBQx-H-TF/PBTIC-γ-TT), resulting in a J of 22.24 mA cm, a FF of 67.80%, and a PCE of 14.21% in the device. These observations revealed the significance of molecular structure adjustment for better device performance, and therefore, PBQx-H-TF can be an excellent candidate for all-PSCs.
相关链接	[Scopus记录]
收录类别	SCI ; EI
语种	英语
重要成果	NI论文
学校署名	第一 ; 通讯
WOS记录号	WOS:000755658700027
EI入藏号	20220111417012
EI主题词	Energy gap ; Molecular structure ; Polymer solar cells
EI分类号	Energy Losses (industrial and residential):525.4 ; Solar Cells:702.3 ; Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3
ESI学科分类	CHEMISTRY
Scopus记录号	2-s2.0-85122039682
来源库	Scopus
引用统计	被引频次[WOS]：14
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/327959
专题	理学院_化学系前沿与交叉科学研究院深圳格拉布斯研究院
作者单位	1.Shenzhen Grubbs Institute and Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China 2.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China 3.Guangdong Provincial Key Laboratory of Catalysis,Southern University of Science and Technology,Shenzhen,518055,China
第一作者单位	化学系; 深圳格拉布斯研究院
通讯作者单位	化学系; 深圳格拉布斯研究院; 南方科技大学
第一作者的第一单位	化学系; 深圳格拉布斯研究院
推荐引用方式 GB/T 7714	Zhao，Tingxing,Cao，Congcong,Wang，Hengtao,等. Highly Efficient All-Polymer Solar Cells from a Dithieno[3,2-f:2′,3′-h]quinoxaline-Based Wide Band Gap Donor[J]. MACROMOLECULES,2021,54(24):11468-11477.
APA	Zhao，Tingxing.,Cao，Congcong.,Wang，Hengtao.,Shen，Xiangyu.,Lai，Hanjian.,...&He，Feng.(2021).Highly Efficient All-Polymer Solar Cells from a Dithieno[3,2-f:2′,3′-h]quinoxaline-Based Wide Band Gap Donor.MACROMOLECULES,54(24),11468-11477.
MLA	Zhao，Tingxing,et al."Highly Efficient All-Polymer Solar Cells from a Dithieno[3,2-f:2′,3′-h]quinoxaline-Based Wide Band Gap Donor".MACROMOLECULES 54.24(2021):11468-11477.