Article
Engineering, Environmental
Ruonan Li, Chao Wang, Chengyi Xiao, Baiqiao Liu, Shijie Liang, Yuhao Li, Yaobin Lu, Yining Sun, Yunhua Xu, Weiwei Li
Summary: The innovation of polymer acceptors through the polymerized small molecular acceptors (PSMAs) strategy has led to significant developments in all-polymer solar cells (all-PSCs). This study focuses on the synthesis of non-fused PSMAs that have a thieno[3,4-c]pyrrole-4,6-dione (TPD) core, with planar configuration, simplified synthesis, and near-infrared absorption. The results show that TPD-based PSMAs have high efficiency in all-PSCs, with the regioregular polymer achieving the highest performance due to efficient exciton separation and charge transport.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yuxin Kong, Yuxiang Li, Jianyu Yuan, Liming Ding
Summary: This article focuses on the importance of controlling the regioregularity of polymerized small molecular acceptors (PSMAs) in all-polymer solar cells (all-PSCs). The integration of regioregular PSMAs improves the absorption, backbone ordering, and blend morphology of the polymer acceptors compared to regiorandom ones. These regioregular PSMAs also enable repeatable synthesis and reproducible device performance, which is essential for scaling-up and commercializing all-PSCs. The article discusses the challenges and prospects of PSMAs as a new platform for advancing all-PSCs.
Article
Energy & Fuels
Baoqi Wu, Yue Zhang, Shizeng Tian, Jiyeon Oh, Mingqun Yang, Langheng Pan, Bingyan Yin, Changduk Yang, Chunhui Duan, Fei Huang, Yong Cao
Summary: The development of polymer acceptors is critical for high-efficiency all-polymer solar cells. In this study, two novel polymer acceptors derived from non-fused small molecules were reported for the first time, offering improved device performance due to more ordered polymer packing resulting in more efficient exciton separation and charge transport. This work demonstrates that polymerizing non-fused small molecular acceptors is an effective strategy for developing polymer acceptors for high-performance all-PSCs.
Article
Polymer Science
Rong Wei, Hui Chen, Yikun Guo, Han Han, Di Zhang, Yulin Zhu, Feng He, Dahui Zhao
Summary: Perylenediimide-based polymers have excellent photovoltaic properties but typically exhibit low open-circuit voltage in PSCs. This study synthesized two new polymer acceptors with elevated LUMO levels by fusing electron-rich moieties, achieving desirable efficiencies through optimized backbone regularity.
Article
Chemistry, Physical
Jianchao Jia, Qiri Huang, Tao Jia, Kai Zhang, Jie Zhang, Jingsheng Miao, Fei Huang, Chuluo Yang
Summary: This study investigates the impact of batch differences between different conjugated polymers on the performance of solar cells, providing new insights into the complicated batch effects of PSMAs on device performance while avoiding cross-talk between them. The research highlights the importance of understanding how variations in molecular weights and regioregularity can affect the efficiency and performance of photovoltaic devices.
ADVANCED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Chao Wang, Chong Guan, Ting Wu, Xiaoqing Liu, Jie Fang, Feng Liu, Chengyi Xiao, Weiwei Li
Summary: Two non-fused polymerized small-molecule acceptors (PSMAs) with a benzothiadiazole (BT) core have been developed for application in all-polymer solar cells (all-PSCs). The S-O non-covalent interaction and the regioregularity were introduced to improve the crystallinity and charge transport properties. As a result, a high-power conversion efficiency (PCE) of 11.42% with enhanced photocurrent was obtained, representing the highest PCE based on non-fused PSMAs. The encouraging results will inspire more design of non-fused PSMAs towards high-performance all-PSCs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Cheng Sun, Jin-Woo Lee, Soodeok Seo, Seungjin Lee, Cheng Wang, Huan Li, Zhengping Tan, Soon-Ki Kwon, Bumjoon J. Kim, Yun-Hi Kim
Summary: Tuning the aggregation and crystalline properties of polymers is crucial for achieving optimal blend morphology and high power conversion efficiency in all-polymer solar cells (all-PSCs). Simultaneous engineering of PSMA backbone regioregularity and side-chain structures is important for enhancing electron mobility, optimizing blend morphology, and achieving highly efficient all-PSCs.
ADVANCED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yuanfeng Li, Difei Zhang, Zhenqiang Huang, Tianyang Zhang, Nan Zheng, Feng Peng, Lei Ying, Fei Huang
Summary: This study focuses on the design and synthesis of two naphtho[1,2-c:5,6-c ']bis([1,2,5]thiadiazole) derivatives as non-fullerene acceptors for organic solar cells. The effect of halogen substitution on the properties of the derivatives was investigated, and PTzBI-dF was used as the electron-donating polymer. It was found that the film based on the chlorinated derivative showed a more favorable morphology and slightly higher power conversion efficiency.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Soodeok Seo, Cheng Sun, Jin-Woo Lee, Seungjin Lee, Dongchan Lee, Cheng Wang, Tan Ngoc-Lan Phan, Geon-U Kim, Shinuk Cho, Yun-Hi Kim, Bumjoon J. Kim
Summary: By designing a new series of polymerized small molecule acceptor-based polymer acceptors, the authors controlled the donating moiety and backbone regioregularity to enhance electron mobility and power conversion efficiencies. The effects of different donating units and regioisomers on PCEs were found to be opposite, with the highest efficiency achieved by a specific blend with the highest electron mobility. The study highlights the importance of simultaneous engineering of the backbone building unit and regioregularity for high-mobility P-A and highly efficient all-PSCs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Applied
Xuyu Gao, Huabin Wang, Ruitao Yu, Yijing Wu, Yinming He, Tianjian Yang, Youtian Tao
Summary: A new terpolymer acceptor PNDI-BTzx (x = 5 and 10) was designed by introducing fluorinated benzotriazole (2f-BTz) into the N2200 backbone, leading to enhanced absorption coefficients, weakened polymer crystallinities, and improved polymer miscibility. All-PSCs based on PNDI-BTz5 demonstrated enhanced photovoltaic performance with better thickness tolerance, showing potential for reproducible and thick-film practical applications in all-polymer photovoltaics.
Article
Chemistry, Multidisciplinary
Xiaobin Gu, Yanan Wei, Xingzheng Liu, Na Yu, Laiyang Li, Ziyang Han, Jinhua Gao, Congqi Li, Zhixiang Wei, Zheng Tang, Xin Zhang, Hui Huang
Summary: Novel polymeric acceptors (PBTzO and PBTzO-2F) were designed and synthesized by copolymerization of noncovalently fused ring acceptors, which were employed in all-polymer solar cells for the first time, resulting in improved power conversion efficiency and reduced cost.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Wenyan Su, Qunping Fan, Ishita Jalan, Yufei Wang, Wenhong Peng, Tao Guo, Weiguo Zhu, Donghong Yu, Lintao Hou, Ellen Moons, Ergang Wang
Summary: The study developed a series of low band gap nonconjugated terpolymer acceptors using a ternary polymerization strategy, incorporating ITIC building blocks to optimize the photoelectric properties and enhance the performance of all-polymer solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Si-Ya Liu, Di Wang, Tian-Jiao Wen, Guan-Qing Zhou, Hai-Ming Zhu, Hong-Zheng Chen, Chang-Zhi Li
Summary: In this study, two non-fused ring acceptors were developed and their self-assembly and stacking in solid state were modulated by tuning the aromatic chains. The p-PTIC4Cl based blend films showed higher PCE, better exciton dissociation and charge transfer rates, as well as superior photostability compared to the t-PTIC4Cl based blends.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jin-Woo Lee, Cheng Sun, Sun-Woo Lee, Geon-U Kim, Sheng Li, Cheng Wang, Taek-Soo Kim, Yun-Hi Kim, Bumjoon J. Kim
Summary: This study achieves highly efficient and mechanically robust polymer solar cells by designing a polymerized small-molecule acceptor with regular flexible spacers. The resulting solar cells show high power conversion efficiency and stretchability, and are fabricated using an environmentally friendly solvent process.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Li Zhang, Silong Tu, Wen Wang, Qidan Ling
Summary: The study focused on the development and characterization of two newly synthesized brominated SMAs, F8IDT-Br and C8IDT-Br, which showed excellent performance and stability in organic solar cells. The results demonstrate that bromination of non-fused SMAs can further improve relevant device performance, indicating the potential for these materials in enhancing efficiency of OSCs.
ACS APPLIED ENERGY MATERIALS
(2021)