Article
Energy & Fuels
Yan Chen, Lin Hu, Na Chen, Li-Hong Wang, Dong-Nai Ye, Hui Liu, Yingzhi Jin, Zaifang Li, Shi-Yong Liu
Summary: A multidimensional second acceptor was introduced to modulate the molecule's crystallization and phase separation of the active layer bulk heterojunction blends, leading to a significant improvement in the efficiency of organic solar cells. Higher carrier mobility and reduced carrier recombination were observed in the ternary systems.
Article
Polymer Science
Xiaoyi Xu, Yue Yue, Guoqing Xin, Ning Huang
Summary: A new kind of perylene-based 2D COF was designed and synthesized based on the C-2 + C-2 topological diagram, and its electrical performance was enhanced through donor-acceptor interaction.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Siyi Ding, Ruijie Ma, Tao Yang, Guangye Zhang, Junli Yin, Zhenghui Luo, Kai Chen, Zongcheng Miao, Tao Liu, He Yan, Dongfeng Xue
Summary: This study demonstrates a simple and effective method to enhance the power conversion efficiency of highly efficient non-fullerene organic solar cells by mixing two electron transport materials. The new electron transport layer shows improved alignment with the active layer's energy level and morphology, leading to enhanced charge extraction, selectivity, and reduced exciton recombination. These improvements result in a boosted PCE in the PM6:Y6-based solar cells and also lead to leading results in binary all-polymer solar cells when combined with the non-halogenated solvent-processed PM6:PY-IT-based active layer.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Applied
Ziliang Cao, Qiaogan Liao, Zheling Zhang, Tianhuan Huang, Zhengqi Deng, Hao Guan, Shuang Geng, Dongjie Wang, Jian Zhang
Summary: To improve the performance of organic solar cells (OSCs), incorporating a third component into the binary blend is a feasible strategy. In this study, a non-fullerene small molecule acceptor, IDIC, was added to the PM6:BTP-eC9 system to prepare high-performance ternary OSCs. The good absorption, compatibility, and energy level of IDIC contribute to enhanced light-harvesting and charge transport, leading to higher power conversion efficiency. This work demonstrates the effectiveness and convenience of using a third component with appropriate absorption and compatibility to fabricate high-performance ternary OSCs.
Article
Polymer Science
Yi Yuan, Pankaj Kumar, Jenner H. L. Ngai, Xiguang Gao, Xu Li, Haitao Liu, Jinliang Wang, Yuning Li
Summary: Organic semiconductors have low dielectric constant and high exciton binding energy, leading to low power conversion efficiency and requirements for delicate nanophase separation in organic solar cells. This study shows that using methyl acrylate as a weakly electron-withdrawing side chain can increase the dielectric constant, reduce the exciton binding energy, and enhance the efficiency of polymer semiconductors in solar cells.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Organic
Fangbei Liu, Peiyuan Qu, Marcus Weck
Summary: We successfully achieved substrate-selective asymmetric transfer hydrogenation of aromatic ketones using rhodium complexes immobilized on a photoresponsive nanoreactor. The morphology of the nanoreactor can be switched by light irradiation in a wavelength-selective manner. The gated behavior in the cross-linking layer plays a crucial role in discriminating among substrates and reagents during catalysis. Under ultraviolet light irradiation, the nanoreactor exhibits substrate selectivity and converts smaller ketone substrates to corresponding secondary alcohols faster.
Review
Chemistry, Multidisciplinary
Yaoyao Liu, Bingjie Li, Zhonghua Xiang
Summary: Photocatalytic H-2 evolution under solar illumination has been considered a promising technology for green energy resources. Developing highly efficient photocatalysts for photocatalytic water splitting has been a long-term desired goal that is still challenging. Conjugated polymers (CPs) have been attracting ongoing attention as promising alternatives for solar-driven H-2 production due to their excellent characteristics.
Article
Chemistry, Physical
Anastasia Markina, Kun-Han Lin, Wenlan Liu, Carl Poelking, Yuliar Firdaus, Diego Rosas Villalva, Jafar Khan, Sri H. K. Paleti, George T. Harrison, Julien Gorenflot, Weimin Zhang, Stefaan De Wolf, Iain McCulloch, Thomas D. Anthopoulos, Derya Baran, Frederic Laquai, Denis Andrienko
Summary: Efficiencies of organic solar cells have been greatly improved by the development of non-fullerene acceptors (NFAs) and by analyzing the inhomogeneous electrostatic fields at the donor-acceptor interface. It is suggested that a molecular quadrupole moment of around 75 Debye angstrom can balance the trade-offs between open circuit voltage losses and gains in charge generation efficiency in PCE10:NFA solar cells.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Lixin Wang, Zixuan Zhu, Shaoyong Yang, Jiazhao Fan, Shahua Huang, Shaopeng Yang, Huafeng Li, Haifen Liu
Summary: Great progress has been made in non-fullerene binary and ternary organic solar cells, with both polymer and small-molecule acceptors showing promising power conversion efficiencies (PCEs). However, there are few examples of ternary organic solar cells combining polymer and small-molecule acceptors. In this study, the addition of the small-molecule acceptor IDIC to the all-polymer blend PBDB-T:N2200 resulted in improved device performance, including a more uniform interpenetrating structure, better phase separation, and increased crystallinity. As a result, the PCE of the devices increased from 6.08% to 6.98%. This efficient strategy could guide the design of more two-acceptor-based ternary organic solar cells with all-polymer as the host.
Article
Energy & Fuels
Suhyun Min, Seung Hee Han, Chanju Park, Ka Yeon Ryu, Kyungkon Kim
Summary: Research found that non-fullerene acceptor (NFA)-based organic solar cells experience significant power conversion efficiency degradation in the early stages of operation mainly due to a rapid increase in interfacial resistance. Constructing a ternary photoactive layer can effectively suppress this increase in interfacial resistance, while using fullerene acceptors can enhance light absorption at short wavelengths and improve PCE.
Article
Nanoscience & Nanotechnology
Naoya Nakao, Soichiro Ogawa, Hyung Do Kim, Hideo Ohkita, Tsubasa Mikie, Masahiko Saito, Itaru Osaka
Summary: The study found that achieving a balance between the backbone order and solubility of pi-conjugated polymers through careful molecular design can lead to higher photovoltaic performance in organic solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Jiaxin Luo, Yuqing Wang, Shaojin Shi, Yuankun Wu, Taochun Ma, Leyao Wang, Glib Baryshnikov, Xinyan Wu, Chengjie Li, Yongshu Xie
Summary: Concerted companion (CC) dyes have been developed by linking the donors of porphyrin and organic dye units. The DSSCs based on the CC dyes XW85 and XW86 show higher J(SC) and PCE compared to the corresponding cosensitization systems. However, the PCEs for XW85 and XW86 are still lower than that of the acceptor-linked reference dye XW76. The study suggests that longer linking chains and avoidance of unfavorable alignments can improve the photovoltaic behavior of CC dyes.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Polymer Science
Shili Cheng, Liang Wang, Chuanhang Guo, Donghui Li, Jinlong Cai, Weiqiang Miao, Baocai Du, Pang Wang, Dan Liu, Tao Wang
Summary: The study found that the new non-fullerene acceptor BTP-4F-C9-20 exhibits good compatibility and solubility in organic solar cells, showing good binary interaction with the polymer donor PM6. Introducing the acceptor Y7-BO with higher chi value increased phase separation and improved device performance in the ternary system.
Article
Polymer Science
Robin Wessling, Rodrigo Delgado Andres, Isabel Morhenn, Pascal Acker, Wafa Maftuhin, Michael Walter, Uli Wuerfel, Birgit Esser
Summary: This study investigates the properties and applications of organic donor-acceptor redox polymers, and finds that one of the polymers can serve as a charge storage material in batteries and a donor material in bulk heterojunction photovoltaic devices. This study demonstrates the feasibility of designing multifunctional materials, but also highlights the challenges involved.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Qing Yun Li, Ravinder Kaur, William E. Meador, Juganta K. Roy, Jerzy Leszczynski, Jared H. Delcamp
Summary: The study demonstrates that organic dyes with a cross-conjugated dibenzosilin double donor design can enhance the performance of solar cells, reduce recombination losses, and provide good surface protection.
Article
Chemistry, Multidisciplinary
Heng Zhao, Jingwei Xue, Hongbo Wu, Baojun Lin, Yuhang Cai, Ke Zhou, Daqin Yun, Zheng Tang, Wei Ma
Summary: The power conversion efficiency of organic solar cells has reached high values, but current fabrication methods using toxic solvents and limited photoactive layer thickness restrict their practical development. This study successfully fabricated high-efficiency, thick-film organic solar cells using non-halogenated solvents and hot slot-die coating technique, leading to the industrial development of organic solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yafei Wang, Zhong Zheng, Jianqiu Wang, Xiaoyu Liu, Junzhen Ren, Cunbin An, Shaoqing Zhang, Jianhui Hou
Summary: Due to its excellent optoelectronic properties and simple preparation, zinc oxide (ZnO) has been widely used in organic solar cells (OSCs). A simple and effective method for removing residual amine from ZnO without damaging its properties is reported. By optimizing the cathode interface layer using boric acid (BA), the power conversion efficiency (PCE) and stability of OSCs are significantly improved.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Guangcong Zhang, Qiaomei Chen, Zhou Zhang, Jie Fang, Chaowei Zhao, Yen Wei, Weiwei Li
Summary: Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been widely used as a hole transporting layer (HTL) in organic solar cells (OSCs), but its acidity reduces device stability. A new cobalt-lanthanum (Co-La) inorganic system was developed as a HTL with a high conversion efficiency (PCE) of 18.82%, one of the top PCEs in binary OSCs. The Co-La system enhances work function and conductivity compared to Co or La-based HTLs, making it a promising replacement for PEDOT:PSS in OSCs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Lijiao Ma, Shaoqing Zhang, Junzhen Ren, Guanlin Wang, Jiayao Li, Zhihao Chen, Huifeng Yao, Jianhui Hou
Summary: In this study, a series of electron acceptors with different polar functional substituents were synthesized and investigated for use in organic photovoltaic cells. Among them, A4T-32 with the strongest polar functional group showed the highest surface energy, enabling morphological modulation and resulting in high power conversion efficiency. Additionally, the cells maintained good performance under prolonged simulated sunlight, highlighting their potential for practical applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Zhou Zhang, Chaowei Zhao, Yuefeng Zhang, Yingzi Han, Ziwei Zhang, Jie Fang, Dongdong Xia, Shengyong You, Qiaomei Chen, Weiwei Li
Summary: The hierarchical surface reactivity of a Ti-oxo cluster (TOC) supported by multiple surface ligands has been studied, and a series of aromatics substituted TOC-Ars with identical core have been produced. These TOC-Ars can be processed into smooth films with optimized semiconducting properties, resulting in high power conversion efficiencies in organic solar cells. The unique electron doping behavior and strong interaction with the polymer donor make TOC-Ph a promising candidate for efficient charge transport in OSCs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Kaihu Xian, Shengnan Zhang, Ye Xu, Junwei Liu, Kangkang Zhou, Zhongxiang Peng, Mingfei Li, Wenchao Zhao, Yu Chen, Zhuping Fei, Jianhui Hou, Yanhou Geng, Long Ye
Summary: By precisely controlling the acceptor aggregation, the performance and thermal stability of non-fullerene organic photovoltaics (OPVs) can be improved, resulting in higher efficiency and longer operational lifetime.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Physical
Pengqing Bi, Cunbin An, Tao Zhang, Zhihao Chen, Ye Xu, Yong Cui, Jianqiu Wang, Jiayao Li, Yafei Wang, Junzhen Ren, Xiaotao Hao, Shaoqing Zhang, Jianhui Hou
Summary: This study synthesized a series of polymers based on thiadiazole, 4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene, and fluorinated BDT-T units. These polymers exhibited wide bandgaps and low energetic disorders, achieving high power conversion efficiencies of over 15%, 14.79%, and 18.28% after blending with the non-fullerene acceptor FTCC-Br.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Haimei Wu, Baofeng Zhao, Sen Zhang, Zhaozhao Bi, Weiping Wang, Liuchang Wang, Zhiyuan Cong, Wei Ma, Chao Gao
Summary: Polymer solar cells (PSCs) have made significant progress in recent years thanks to A-DA 'D-A type small molecule electron-acceptors (SMEAs). The power conversion efficiencies (PCEs) have exceeded 19% in PSCs incorporating wide-bandgap polymer electron-donors and fine-tuned A-DA 'D-A SMEAs. However, the relatively small open-circuit voltage (VOC) hampers further enhancement of PSC performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jingwei Xue, Heng Zhao, Chao Zhao, Lingxiao Tang, Yilin Wang, Jingming Xin, Zhaozhao Bi, Ke Zhou, Wei Ma
Summary: Researchers developed a strategy to control the crystallization kinetics and enhance the crystallinity of acceptors in organic solar cells by introducing a strong crystalline small molecule, BTR-Cl. This strategy enabled the fabrication of efficient devices without any post-treatment, achieving a remarkable power conversion efficiency of 17.50% via ambient air printing. The generalization of this strategy in other systems suggests its potential for universally fabricating high-efficiency and eco-friendly organic solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaobo Yu, Liangliang Chen, Cheng Li, Chenying Gao, Xiang Xue, Xisha Zhang, Guanxin Zhang, Deqing Zhang
Summary: This paper reports terpolymers as intrinsically stretchable polymeric semiconductors with good ductility and high charge mobility by incorporating non-centrosymmetric spiro-fluorene units into the backbone of DPP-based conjugated polymers. These terpolymers exhibit high crack onset strains, reduced tensile moduli, and high charge mobilities (>1.0 cm2 V-1 s-1) at 100% strain, even after repeated stretching and releasing cycles. Among them, terpolymer P2, with cyclopropane linked to the spiro-fluorene unit, has the highest reported mobility of 3.1 cm2 V-1 s-1 at 150% strain and 1.4 cm2 V-1 s-1 after 1000 cycles of stretching and releasing.
ADVANCED MATERIALS
(2023)
Article
Energy & Fuels
Mohammed S. G. Hamed, Jude N. Ike, Yilin Wang, Ke Zhou, Wei Ma, Genene Tessema Mola
Summary: Ag/CuPO4 nanocomposite was successfully synthesized for use in thin-film organic solar cells (TFOSCs) to suppress charge recombination and enhance light absorption. The morphological and optical properties were studied, showing a significant improvement in device performance and a 95% increase in power conversion efficiency. The concentration of the nanocomposite in the absorber layer was found to affect photocurrent measurements. This article discusses the effects of the metal nanocomposite in TFOSCs in terms of local surface plasmon resonance and far-field scattering.
Article
Polymer Science
Xiaoqing Liu, Shijie Liang, Wen Liang Tan, Christopher R. Mcneill, Chengyi Xiao, Chao Wang, Weiwei Li
Summary: In this study, the researchers demonstrated the crucial role of end groups in governing the film morphology and charge transport properties in single-component organic solar cells. By manipulating the degree of fluorination on the end group, they successfully improved the optical and electronic characteristics of the materials and achieved high power conversion efficiency in SCOSCs.
Article
Materials Science, Multidisciplinary
Ying Liu, Chengcheng Xie, Wenbin Lai, Zhonggao Bu, Guangcong Zhang, Chengyi Xiao, Weiwei Li
Summary: This study presents a novel approach using composite inks based on silver nanowires to fabricate stretchable transparent electrodes(STEs). The STEs demonstrate low sheet resistance, facilitated surface roughness, strong adhesive strength, high transparency, remarkable stretchability, and exceptional thermal stability. Flexible organic solar cells employing this composite STE achieve outstanding performance.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Guangcong Zhang, Qiaomei Chen, Zhou Zhang, Zihao Gao, Chengyi Xiao, Yen Wei, Weiwei Li
Summary: In this study, the work function of nickel oxide nanoparticles is optimized through rare earth doping, enhancing charge injection efficiency and achieving high power conversion efficiency in organic solar cells. Furthermore, the introduction of a reductant further improves the performance, surpassing devices based on PEDOT:PSS. When employed in a ternary blend system, the nickel oxide nanoparticles exhibit top-performing performance among solution-processed inorganic nanoparticles in reported organic solar cells.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xucong Liu, Zhou Zhang, Chao Wang, Cuifen Zhang, Shijie Liang, Haisheng Fang, Bo Wang, Zheng Tang, Chengyi Xiao, Weiwei Li
Summary: A novel pyrene-fused dimerized acceptor has been synthesized, featuring a distinctive butterfly-like structure. It seamlessly integrates into ternary organic solar cells and significantly enhances efficiency and stability, thanks to its extended pi-conjugated backbone, low solubility, high glass transition temperature, and low-lying frontier energy levels.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
