Imide-Functionalized Heteroarene-Based n-Type Terpolymers Incorporating Intramolecular Noncovalent Sulfur center dot center dot center dot Oxygen Interactions for Additive-Free All-Polymer Solar Cells

Sun, Huiliang1,2,3; Liu, Bin1,2,4; Koh, Chang Woo5; Zhang, Yujie1,2; Chen, Jianhua1,2; Wang, Yang1,2; Chen, Peng1,2; Tu, Bao1,2; Su, Maoyao1,2; Wang, Hang1,2; Tang, Yumin1,2; Shi, Yongqiang1,2; Woo, Han Young5; Guo, Xugang1,2

2019-08-16

10.1002/adfm.201903970

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

The aggregation/crystallinity of classic n-type terpolymers based on naphthalene diimide and perylene diimide is challenging to tune due to their rigid and extended cores, leading to suboptimal film morphology. A new strategy for developing high-performance n-type terpolymers by incorporating imide-functionalized heteroarenes is reported here to balance crystallinity and miscibility without sacrificing charge carrier mobilities. The introduction of thienopyrroledione (TPD) into the copolymer f-BTI2-FT results in a series of terpolymers BTI2-xTPD having distinct TPD content. The irregular backbone reduces crystallinity, yielding improved miscibility with the polymer donor. More importantly, TPD triggers noncovalent SMIDLINE HORIZONTAL ELLIPSISO interactions, increasing backbone planarity and in-chain charge transport. Such interactions also promote face-on polymer packing. As a result, all-polymer solar cells (all-PSCs) based on BTI2-30TPD achieve an optimal power conversion efficiency (PCE) of 8.28% with a small energy loss (0.53 eV). This efficiency is substantially higher than that of TPD (4.4%) or a BTI2-based copolymer (6.8%) and is also the highest for additive-free all-PSCs based on a terpolymer acceptor. Moreover, the BTI2-30TPD cell exhibits excellent stability with the PCE retaining 90% of its initial value after 400 h of aging. The results demonstrate that random polymerization using imide-functionalized heteroarenes is a powerful approach to develop terpolymer acceptors toward efficient and stable all-polymer solar cell PSCs.

all-polymer solar cells imide-functionalized heteroarenes n-type polymers organic electronics random terpolymers

SCI ; EI

英语

NI论文

第一 ; 通讯

NRF of Korea[2016M1A2A2940911] ; NRF of Korea[2019R1A6A1A11044070]

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

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

WOS:000481336900001

WILEY-V C H VERLAG GMBH

20193407333546

Additives ; Crystallinity ; Energy dissipation ; Naphthalene ; Oxygen ; Solubility ; Sulfur ; Terpolymers

Energy Losses (industrial and residential):525.4 ; Physical Chemistry:801.4 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; 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, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
4.Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen 518055, Peoples R China
5.Korea Univ, Dept Chem, Seoul 136713, South Korea

Sun, Huiliang,Liu, Bin,Koh, Chang Woo,et al. Imide-Functionalized Heteroarene-Based n-Type Terpolymers Incorporating Intramolecular Noncovalent Sulfur center dot center dot center dot Oxygen Interactions for Additive-Free All-Polymer Solar Cells[J]. ADVANCED FUNCTIONAL MATERIALS,2019,29(42).

Sun, Huiliang.,Liu, Bin.,Koh, Chang Woo.,Zhang, Yujie.,Chen, Jianhua.,...&Guo, Xugang.(2019).Imide-Functionalized Heteroarene-Based n-Type Terpolymers Incorporating Intramolecular Noncovalent Sulfur center dot center dot center dot Oxygen Interactions for Additive-Free All-Polymer Solar Cells.ADVANCED FUNCTIONAL MATERIALS,29(42).

Sun, Huiliang,et al."Imide-Functionalized Heteroarene-Based n-Type Terpolymers Incorporating Intramolecular Noncovalent Sulfur center dot center dot center dot Oxygen Interactions for Additive-Free All-Polymer Solar Cells".ADVANCED FUNCTIONAL MATERIALS 29.42(2019).