A fluorine-induced high-performance narrow bandgap polymer based on thiadiazolo[3,4-c] pyridine for photovoltaic applications

doi:10.1039/c6ta04059d

QIBEBT-IR > 先进有机功能材料研究组

	A fluorine-induced high-performance narrow bandgap polymer based on thiadiazolo[3,4-c] pyridine for photovoltaic applications
	Wang, Jiuxing 1,2; Bao, Xichang1 ; Ding, Dakang 1,3; Qiu, Meng 1; Du, Zurong 1,2; Wang, Junyi 1,2; Liu, Jie1 ; Sun, Mingliang 3; Yang, Renqiang 1,4
	2016
发表期刊	JOURNAL OF MATERIALS CHEMISTRY A
卷号	4 期号:30 页码:11729-11737
摘要	Thiadiazolo[3,4-c]pyridine (PT) has great potential in the construction of high-performance narrow bandgap (NBG) photovoltaic polymers. But to date the best power conversion efficiencies (PCEs) for PT-containing polymers are only around 6%. Herein, we report two PT-containing NBG polymers PDTPT-2T and PDTPT-2TF based on 2,2'-bithiophene (2T) and 3,3'-difluoro-2,2'-bithiophene (2TF), respectively. The effects of a fluorine substituent on optoelectronic properties are thoroughly investigated. The film absorption onset of PDTPT-2TF is 855 nm, bathochromic-shifted by 24 nm in comparison with that (831 nm) of PDTPT-2T. The lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) energy levels of PDTPT-2TF are down-shifted by 0.15 and 0.11 eV relative to those of PDTPT-2T, respectively. X-ray diffraction (XRD) patterns indicate that a more ordered structure is formed in the solid film of PDTPT-2TF. Furthermore, the miscibility between the polymer and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) is significantly improved through the introduction of fluorine. Consequently, PDTPT-2TF exhibits a high PCE of 8.01%, while PDTPT-2T only shows a maximum PCE of 2.65%. The efficiency of 8.01% is the highest one for PT-containing polymers, and more importantly, it is achieved without any processing additives or post-treatments. This work indicates that PT would have great potential as a building block to construct high-performance photovoltaic polymers.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1039/c6ta04059d
关键词[WOS]	ORGANIC SOLAR-CELLS ; OPEN-CIRCUIT VOLTAGE ; CONJUGATED POLYMERS ; MOLECULAR-WEIGHT ; QUANTUM EFFICIENCY ; RATIONAL DESIGN ; BUILDING-BLOCK ; HETEROJUNCTION ; COPOLYMERS ; GAP
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
项目资助者	Ministry of Science and Technology of China(2014CB643501 ; National Natural Science Foundation of China(21274161 ; 2010DFA52310) ; 21402219 ; 51173199 ; 51573205 ; 61107090)
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000381505100018
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/8427
专题	先进有机功能材料研究组
作者单位	1.Chinese Acad Sci, CAS Key Lab Bio based Mat, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China 4.South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jiuxing,Bao, Xichang,Ding, Dakang,et al. A fluorine-induced high-performance narrow bandgap polymer based on thiadiazolo[3,4-c] pyridine for photovoltaic applications[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(30):11729-11737.
APA	Wang, Jiuxing.,Bao, Xichang.,Ding, Dakang.,Qiu, Meng.,Du, Zurong.,...&Yang, Renqiang.(2016).A fluorine-induced high-performance narrow bandgap polymer based on thiadiazolo[3,4-c] pyridine for photovoltaic applications.JOURNAL OF MATERIALS CHEMISTRY A,4(30),11729-11737.
MLA	Wang, Jiuxing,et al."A fluorine-induced high-performance narrow bandgap polymer based on thiadiazolo[3,4-c] pyridine for photovoltaic applications".JOURNAL OF MATERIALS CHEMISTRY A 4.30(2016):11729-11737.