Article
Chemistry, Multidisciplinary
Zuojia Li, Kui Feng, Jingwei Wang, Min Li, Qianqian Xu, Xiaochang Li, Xugang Guo
Summary: In this study, eco-friendly solvent-processed all-polymer solar cells were developed using wide-bandgap polymer PSTZ and narrow-bandgap polymer DCNBT-IDT as materials. The solar cells processed with o-xylene and THF showed remarkable power conversion efficiencies and high short-circuit currents, indicating that utilizing a blend of narrow polymer acceptor and compatible polymer donor is an effective strategy for advancing eco-friendly solvent-processed all-PSCs.
Article
Polymer Science
Chulhee Lim, Seungjin Lee, Daehee Han, Changyeon Lee, Bumjoon J. Kim
Summary: The design of a series of random terpolymers with improved processability and broad composition tolerance is presented in this study. The terpolymers maintain good optoelectronic properties and achieve high power conversion efficiencies in polymer solar cells.
Article
Nanoscience & Nanotechnology
Su Hong Park, Na Yeon Kwon, Hyung Jong Kim, Eunbin Cho, Hungu Kang, Amit Kumar Harit, Han Young Woo, Hyo Jae Yoon, Min Ju Cho, Dong Hoon Choi
Summary: Conjugated random terpolymers, PJ-25, PJ-50, and PJ-75, were successfully synthesized and blended with other materials for organic photovoltaic (OPV) and indoor photovoltaic (IPV) cells, exhibiting promising photovoltaic performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Liang Zeng, Ruijie Ma, Zhongxin Zhou, Tao Liu, Yiqun Xiao, Xinhui Lu, Dongfeng Xue, Weiguo Zhu, He Yan, Yu Liu
Summary: Ester side-chain engineering on Qx-based polymers is an effective strategy to improve the photovoltaic performance of all-polymer solar cells.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Xiangxi Wu, Xin Jiang, Xiaojun Li, Jinyuan Zhang, Kan Ding, Hongmei Zhuo, Jing Guo, Jing Li, Lei Meng, Harald Ade, Yongfang Li
Summary: By introducing a phenyl end group in the inner side chains, the morphology and photovoltaic performance of organic solar cells processed by nonhalogenated solvents can be improved.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Chunyang Zhang, Ao Song, Qiri Huang, Yunhao Cao, Zuiyi Zhong, Youcai Liang, Kai Zhang, Chunchen Liu, Fei Huang, Yong Cao
Summary: Improving the long-term stability and photostability of organic photovoltaics is crucial for their industrialization. This study designs and synthesizes two series of terpolymers with an antioxidant butylated hydroxytoluene (BHT)-terminated side chain, and finds that incorporating benzothiadiazole (BT) with BHT side chains enhances the photostability of these polymers. All-polymer solar cells and photodetectors based on these BHT-featuring terpolymers demonstrate improved efficiency and degradation resistance under continuous irradiation. This study provides a feasible approach to enhance the lifetime of organic solar cells and photodetectors.
NANO-MICRO LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Youzhan Li, He Liu, Jiang Wu, Hao Tang, Hailong Wang, Qingqing Yang, Yingying Fu, Zhiyuan Xie
Summary: Utilizing nonhalogenated solvents and high-temperature blade coating technique for preparing the PM6:Y6 blend active layer can achieve high power conversion efficiency in organic solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Jiaxun Peng, Ke Wang, Mengjie Li, Zeyan Peng, Hailu Liu, Meihua Huang, Bin Zhao
Summary: Two novel polymer acceptors with an A-A type backbone were designed and synthesized, which showed better solubility and molecular interactions and achieved higher efficiency for all-polymer solar cells prepared with nonhalogenated solvents.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Chong Dong, Jing Chen, Chun-Hao Chen, Yi-Ran Shi, Wen-Fan Yang, Kai-Li Wang, Zhao-Kui Wang, Liang-Sheng Liao
Summary: By introducing 3,4-ethoxylene dioxy thiophene (EDOT) into the anti-solvent, annealing-free perovskite films with enlarged crystal grains and reduced defects can be achieved, promoting the development of low-cost flexible perovskite photovoltaics.
Article
Chemistry, Physical
Haitao Liao, Xuejiao Tang, Yalun Zhao, Li Chen, Chao Weng, Ping Shen
Summary: Subtle modification of the electron-withdrawing end group of small-molecule acceptors (SMAs) plays a crucial role in regulating their structure, optoelectronic properties, and device performance. In this study, we developed two SMAs based on indacenodithieno[3,2-b]thiophene by employing hybrid dihalogenated 1,1-dicyanomethylene-3-indanone as end groups. The effects of hybrid dihalogenated end groups on solubility, photoelectrochemical properties, morphology, and device performance were comprehensively investigated. The results showed that hybrid dihalogenation improved the absorption ability and elevated the lowest unoccupied molecular orbitals of the corresponding SMAs, leading to increased short-circuit current density and open-circuit voltage. Furthermore, the solubility of the SMAs in nonhalogenated solvents was improved, enabling the fabrication of devices with environmentally friendly solvents. Polymer solar cells based on these SMAs demonstrated enhanced power conversion efficiency compared to their counterparts, highlighting the feasibility of using hybrid dihalogenation to improve the performance of PSCs fabricated with eco-friendly solvents and additives.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Polymer Science
Feng Liu, Dan Wang, Jun-Yu Li, Cheng-Yi Xiao, Yong-Gang Wu, Wei-Wei Li, Guang-Sheng Fu
Summary: Side-chain engineering plays an important role in the design of conjugated materials. In this study, conjugated polymers with functionalized side units were developed as electron donors for organic solar cells, showing improved efficiency in solution-processed cells without any additives. These results suggest that these polymers can act as self-additives in fabricating photoactive layers for OSCs.
CHINESE JOURNAL OF POLYMER SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Thavamani Gokulnath, Jungmin Choi, Hyunjung Jin, Ho-Yeol Park, Kyungmin Sung, Yeongju Do, Hyungjin Park, Saripally Sudhaker Reddy, Jehan Kim, Myungkwan Song, Jinhwan Yoon, Sung-Ho Jin
Summary: The study achieved a benchmark power conversion efficiency (PCE) of 11.66% for all-polymer solar cells (all-PSCs) by manipulating pre-aggregation of the polymer donor and using a specific solvent. The use of a new additive and solvent improved charge carrier mobility, suppressed trap-assisted recombination, and resulted in encapsulation-free devices with good ambient and thermal stabilities.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Jingshuai Zhu, Guilong Cai, Peiyao Xue, Boyu Jia, Changxi Zhang, Xinhui Lu, Zhen Li, Xiaowei Zhan
Summary: The study investigates the effects of incorporating fused-ring electron acceptors IOIC2 or IOIC5 into the PM6:Y6 blend on the performance of organic solar cells. Both IOIC2 and IOIC5 improved the power conversion efficiency (PCE) of the OSCs. The impact of side chains in the third component on device performance was also examined.
Article
Nanoscience & Nanotechnology
Tan Ngoc-Lan Phan, Jin-Woo Lee, Eun Sung Oh, Seungjin Lee, Changyeon Lee, Taek-Soo Kim, Sheng Li, Bumjoon J. Kim
Summary: Organic solar cells (OSCs) based on conjugated block copolymers (CBCs) have gained attention for their simple solution process, but their power conversion efficiencies (PCEs) need improvement. In this study, a new CBC (PBDB-T-b-PY5BDT) was developed, and efficient and stable OSCs were achieved through a halogen-free solution process. The CBC-based OSCs showed better photovoltaic performance, device stability, and mechanical robustness compared to binary all-polymer solar cells and CRC-based OSCs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Zhenghui Luo, Yuan Gao, Hanjian Lai, Yuxiang Li, Ziang Wu, Zhanxiang Chen, Rui Sun, Jiaqi Ren, Cai'e Zhang, Feng He, HanYoung Woo, Jie Min, Chuluo Yang
Summary: This research investigates the impact of side chain modification on the efficiency of organic solar cells. The study demonstrates that asymmetric side-chain substitution enhances π-π stacking and increases electronic couplings, thereby promoting photovoltaic efficiency through improved charge mobility and molecular packing.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xin Wu, Danpeng Gao, Xianglang Sun, Shoufeng Zhang, Qi Wang, Bo Li, Zhen Li, Minchao Qin, Xiaofen Jiang, Chunlei Zhang, Zhuo Li, Xinhui Lu, Nan Li, Shuang Xiao, Xiaoyan Zhong, Shangfeng Yang, Zhong'an Li, Zonglong Zhu
Summary: In this study, a simple design strategy of polymer hole-transporting materials (HTMs) is reported, which can modulate the wettability and promote the anchoring by introducing pyridine units into the polyarylamine backbone, resulting in efficient and stable inverted perovskite solar cells (PVSCs).
ADVANCED MATERIALS
(2023)
Article
Polymer Science
Dong-Xu Li, Shu-Fang Li, Cheng-Long Wen, Chao-Yuan Sun, Chang-Zhou Shi, Xin-Xin Xia, Xin-Hui Lu, Li-Hui Jiang, Jun Yuan, Ying-Ping Zou
Summary: In recent years, research on p-type electron donor materials that match current efficient small molecule acceptors (SMAs) has become important due to the rapid development of high-performance SMAs. By employing asymmetric strategies and taking advantage of fluorine atoms for noncovalent interactions and strong electron withdrawing properties, we designed and synthesized asymmetric aromatic side chain quinoxaline-based polymer donors TPQ-0F, TPQ-1F, TPQ-1Fi, and TPQ-2F. The binary device based on TPQ-2F achieved a high power conversion efficiency (PCE) of 16.27% due to balanced charge transport, reduced recombination, and improved morphology. Our work demonstrates the potential of asymmetric aromatic side chain quinoxaline-based polymer donors in optimizing film morphology and enhancing inter/intramolecular interactions for more efficient organic solar cells.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ligang Yuan, Weiya Zhu, Yiheng Zhang, Yuan Li, Christopher C. S. Chan, Minchao Qin, Jianhang Qiu, Kaicheng Zhang, Jiaxing Huang, Jiarong Wang, Huiming Luo, Zheng Zhang, Ruipeng Chen, Weixuan Liang, Qi Wei, Kam Sing Wong, Xinhui Lu, Ning Li, Christoph J. Brabec, Liming Ding, Keyou Yan
Summary: Researchers have developed a dopant-free hole transport material (HTM) to improve the stability of n-i-p perovskite solar cells (PSCs). This new material has shown high power conversion efficiency and long-term stability.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Polymer Science
Jinjing Qiu, Miao Liu, Yang Wang, Xinxin Xia, Qi Liu, Xia Guo, Xinhui Lu, Maojie Zhang
Summary: This study proposes a facile random copolymerization strategy to improve the aggregation strength and charge mobility of polymer solar cells by inserting short alkyl chains in the polymer acceptor. The polymer acceptors with short alkyl chains exhibit better morphology and higher efficiency when matched with the polymer donor.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zhaotong Qin, Haibo Xue, Minchao Qin, Yuhao Li, Xiao Wu, Wei-Ru Wu, Chun-Jen Su, Geert Brocks, Shuxia Tao, Xinhui Lu
Summary: The influence of two isomeric A'-site ligands on the crystal growth of 2D perovskites was studied, revealing that branched iso-BA(+) facilitates the formation of large clusters and promotes the crystallization of vertically oriented 2D perovskites. Additionally, iso-BA(+) is less likely to be incorporated into the perovskite lattice, suppressing the formation of unwanted multi-oriented perovskites. These findings explain the better performance of 2D perovskite solar cells based on iso-BA(+) and elucidate the fundamental mechanism of ligand structural impact on 2D perovskite crystallization.
Article
Chemistry, Multidisciplinary
Heng Liu, Yuang Fu, Zeng Chen, Jiayu Wang, Jiehao Fu, Yuhao Li, Guilong Cai, Chun-Jen Su, U-Ser Jeng, Haiming Zhu, Gang Li, Xinhui Lu
Summary: This study develops a dual-additive-driven morphology optimization method for all-small-molecule organic solar cells (ASM-OSCs). By incorporating 1,4-diiodobenzene (DIB) and diiodomethane (DIM) as additives, the intermolecular interactions and acceptor phase separation can be modulated, while the over-aggregation of the donor is suppressed. The optimized ASM-OSC device achieves a power conversion efficiency (PCE) of 15.2%, one of the highest PCE reported for binary ASM-OSCs without solvent annealing treatment. This work demonstrates the potential of morphology tuning via the incorporation of dual additives into ASM-OSCs, enabling comparable efficiencies to those of conventional polymer/small-molecule based OSCs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Han Yu, Yan Wang, Xinhui Zou, Han Han, Ha Kyung Kim, Zefan Yao, Zhibo Wang, Yuhao Li, Ho Ming Ng, Wentao Zhou, Jianquan Zhang, Shangshang Chen, Xinhui Lu, Kam Sing Wong, Zonglong Zhu, He Yan, Huawei Hu
Summary: Tuning the properties of non-fullerene acceptors (NFAs) through halogenation is a promising strategy to enhance the performance of organic solar cells (OSCs). However, the influence of F and Cl choice on molecular packing and performance between small-molecule and polymeric acceptors remains unclear. This study investigates the effects of fluorination and chlorination on small-molecule and polymeric acceptors, and finds that chlorinated small-molecule acceptors exhibit better performance due to their stronger intermolecular packing mode, while fluorinated polymers achieve a denser packing mode and better performance compared to chlorinated polymers.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fuliang Cheng, Yongjie Cui, Feng Ding, Zeng Chen, Qian Xie, Xinxin Xia, Peipei Zhu, Xinhui Lu, Haiming Zhu, Xunfan Liao, Yiwang Chen
Summary: Terpolymerization and regioisomerization strategies are utilized to develop novel polymer donors for improving the performance of organic solar cells (OSCs). The study shows that the position of chlorine substituents significantly affects the molecular planarity and electrostatic potential (ESP), thereby influencing the aggregation behavior and miscibility of the donor and acceptor. The terpolymer PM6-TTO-10 exhibits enhanced coplanarity, crystallinity, aggregation behavior, and phase separation, leading to efficient exciton dissociation and charge transfer. Consequently, OSCs based on PM6-TTO-10 achieve a high power conversion efficiency of 18.37% with an outstanding fill factor of 79.97%, which are among the highest reported for terpolymer-based OSCs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Baobing Fan, Wei Gao, Rui Zhang, Werner Kaminsky, Francis R. Lin, Xinxin Xia, Qunping Fan, Yanxun Li, Yidan An, Yue Wu, Ming Liu, Xinhui Lu, Wen Jung Li, Hin-Lap Yip, Feng Gao, Alex K. -Y. Jen
Summary: Organic photovoltaics (OPVs) have made significant progress recently, thanks to the use of well-designed non-fullerene acceptors (NFAs) with conjugated side-groups. Researchers have developed a new class of NFAs with localisomerized conjugated side-groups and studied their impact on device performance and stability. A device based on one of the isomers achieved an impressive efficiency of 18.5% and exhibited excellent photo- and thermal stability. A similar approach was applied to another polymer donor, resulting in an even higher efficiency of 18.8%. This work highlights the effectiveness of local isomerization in enhancing the photovoltaic performance and stability of OPVs based on fused ring NFAs.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Shengfan Wu, Jie Zhang, Minchao Qin, Fengzhu Li, Xiang Deng, Xinhui Lu, Wen-Jung Li, Alex K. -Y. Jen
Summary: By incorporating a cross-linkable organic ligand into the perovskite precursor solution, the facet orientation of polycrystalline perovskite films can be controlled, leading to enhanced performance of perovskite-based devices. The resulting low-dimensional perovskites (LDPs) can passivate defects and improve the efficiency and stability of perovskite solar cells (PSCs), with power conversion efficiencies (PCE) of 24.12% (rigid) and 23.23% (flexible). Furthermore, the ligand enables the derived LDPs to be crosslinked, enhancing the mechanical bending durability of flexible devices.
Article
Chemistry, Multidisciplinary
Yinyi Ma, Chengsong Zeng, Peng Zeng, Yuchao Hu, Faming Li, Zhonghao Zheng, Minchao Qin, Xinhui Lu, Mingzhen Liu
Summary: Modification of the perovskite surface with organic ammonium halide salts is a strategy to improve the open-circuit voltage of perovskite solar cells. The use of polar molecular PMA(+) at the interface between perovskite and hole transporting layer significantly increases the open-circuit voltage, leading to improved performance of the solar cell.
Article
Chemistry, Physical
Julianna Panidi, Eva Mazzolini, Flurin Eisner, Yuang Fu, Francesco Furlan, Zhuoran Qiao, Martina Rimmele, Zhe Li, Xinhui Lu, Jenny Nelson, James R. Durrant, Martin Heeney, Nicola Gasparini
Summary: The use of biorenewable solvents 2MeTHF and CPME to process the active layers of organic photovoltaic devices without additional additives achieves high performance, opening the door to large-scale and green manufacturing of organic solar cells.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Chenghao Duan, Feilin Zou, Qiaoyun Wen, Minchao Qin, Jiong Li, Chang Chen, Xinhui Lu, Liming Ding, Keyou Yan
Summary: Carbazide (CBZ) is used as a bifunctional additive to deposit a pinhole-free film and remove deep traps in CsSnI3 perovskite solar cells (PSCs). The maximum efficiency of the CsSnI3:CBZ PSC reaches 11.21%, which is the highest efficiency reported to date for CsSnI3 PSCs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yongjie Cui, Peipei Zhu, Huawei Hu, Xinxin Xia, Xinhui Lu, Shicheng Yu, Hermann Tempeld, Ruediger-A. Eichel, Xunfan Liao, Yiwang Chen
Summary: By comparing two asymmetric acceptors BTP-Cl and BTP-2Cl with the symmetric acceptor BTP-0Cl, it is found that the asymmetric acceptors have a larger electrostatic potential difference and semi-molecular dipole moment, which contribute to a stronger π-π interaction, resulting in lower non-radiative recombination energy loss (&Δ;E-3) and higher efficiency of organic solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Zhiwen Zhou, Qihua Li, Mojun Chen, Xuerong Zheng, Xiao Wu, Xinhui Lu, Shuxia Tao, Ni Zhao
Summary: In this study, a strategy of additive engineering was used to improve the stability and performance of field-effect transistors (FETs) based on 3D formamidinium tin iodide (FASnI(3)) films. By studying the effects of different additives, it was discovered that phenethyl-ammonium (PEA) and its fluorinated derivative (FPEA) can enhance the crystallization of FASnI(3) films and reduce structural defects. The optimized FPEA-modified FASnI(3) FETs showed record high field-effect mobility and excellent stability.
ACS ENERGY LETTERS
(2023)