High-Performance All-Polymer Solar Cells Enabled by an n-Type Polymer Based on a Fluorinated Imide-Functionalized Arene

Sun, Huiliang1,2,3; Tang, Yumin1,2; Koh, Chang Woo4; Ling, Shaohua1,2; Wang, Ruizhi1,2; Yang, Kun1,2; Yu, Jianwei1,2; Shi, Yongqiang1,2; Wang, Yingfeng1,2; Woo, Han Young4; Guo, Xugang1,2

2019-04-12

10.1002/adma.201807220

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

A novel imide-functionalized arene, di(fluorothienyl)thienothiophene diimide (f-FBTI2), featuring a fused backbone functionalized with electron-withdrawing F atoms, is designed, and the synthetic challenges associated with highly electron-deficient fluorinated imide are overcome. The incorporation of f-FBTI2 into polymer affords a high-performance n-type semiconductor f-FBTI2-T, which shows a reduced bandgap and lower-lying lowest unoccupied molecular orbital (LUMO) energy level than the polymer analog without F or with F-functionalization on the donor moiety. These optoelectronic properties reflect the distinctive advantages of fluorination of electron-deficient acceptors, yielding "stronger acceptors," which are desirable for n-type polymers. When used as a polymer acceptor in all-polymer solar cells, an excellent power conversion efficiency of 8.1% is achieved without any solvent additive or thermal treatment, which is the highest value reported for all-polymer solar cells except well-studied naphthalene diimide and perylene diimide-based n-type polymers. In addition, the solar cells show an energy loss of 0.53 eV, the smallest value reported to date for all-polymer solar cells with efficiency > 8%. These results demonstrate that fluorination of imide-functionalized arenes offers an effective approach for developing new electron-deficient building blocks with improved optoelectronic properties, and the emergence of f-FBTI2 will change the scenario in terms of developing n-type polymers for high-performance all-polymer solar cells.

all-polymer solar cells fluorination imide-functionalized arene n-type polymer organic electronics

SCI ; EI

英语

NI论文

第一 ; 通讯

National Research Foundation of Korea[2016M1A2A2940911]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000468033400013

WILEY-V C H VERLAG GMBH

20190806519109

Electrons ; Energy dissipation ; Fluorination ; Halogenation ; Molecular orbitals ; Naphthalene ; Polymers ; Solar cells

Energy Losses (industrial and residential):525.4 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Organic Compounds:804.1 ; Polymeric Materials:815.1

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol SUSTech, Shenzhen Key Lab Printed Organ Elect, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China
3.South China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
4.Korea Univ, Res Inst Nat Sci, Dept Chem, Seoul 136713, South Korea

Sun, Huiliang,Tang, Yumin,Koh, Chang Woo,et al. High-Performance All-Polymer Solar Cells Enabled by an n-Type Polymer Based on a Fluorinated Imide-Functionalized Arene[J]. ADVANCED MATERIALS,2019,31(15).

Sun, Huiliang.,Tang, Yumin.,Koh, Chang Woo.,Ling, Shaohua.,Wang, Ruizhi.,...&Guo, Xugang.(2019).High-Performance All-Polymer Solar Cells Enabled by an n-Type Polymer Based on a Fluorinated Imide-Functionalized Arene.ADVANCED MATERIALS,31(15).

Sun, Huiliang,et al."High-Performance All-Polymer Solar Cells Enabled by an n-Type Polymer Based on a Fluorinated Imide-Functionalized Arene".ADVANCED MATERIALS 31.15(2019).