Article
Chemistry, Multidisciplinary
Xiang Xu, Qingya Wei, Zhisheng Zhou, Haozhe He, Jingjing Tian, Hin-Lap Yip, Yuang Fu, Xinhui Lu, Yonghua Zhou, Yongfang Li, Yingping Zou
Summary: A high-performance semitransparent organic solar cell (ST-OSC) with high light utilization efficiency (LUE) and color rendering index (CRI) is achieved through a synergistic material and device engineering strategy. The ST-OSC, fabricated using a new near-infrared acceptor BZO-4Cl, demonstrates a LUE of 4.02% and a CRI of 90.67%, making it one of the best-performing ST-OSCs with both high LUE and CRI values.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ji Lin, Qing Guo, Qi Liu, Junfang Lv, Haiyan Liang, Yang Wang, Lei Zhu, Feng Liu, Xia Guo, Maojie Zhang
Summary: A novel asymmetric A-D-π-A type NFA PIST-4F with S···S noncovalent interaction exhibits optimized electronic properties, charge transport, and film morphology compared to the symmetric NFA PI-4F. Devices based on PM6:PIST-4F achieve a higher PCE, indicating PIST-4F is an effective acceptor for high-efficiency organic solar cells.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Kyu Chan Song, Woong Sung, Dong Chan Lee, Sein Chung, Hansol Lee, Jaewon Lee, Shinuk Cho, Kilwon Cho
Summary: This study investigates the effects of the structural symmetry of nonfused-ring electron acceptors (NFREAs) on the performance of organic solar cells (OSCs). The results demonstrate that NFREAs with centrosymmetric cores have advantages in terms of electron transport and power conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Jing Wang, Hongbin Chen, Chenxi Li, Yi Lin, Yang Yang, Zaifei Ma, Yan Lu
Summary: The fluorination strategy for non-fullerene acceptors has been established as an effective method to improve the power conversion efficiencies of organic solar cells. This study investigated the effect of different central unit fluorination strategies on molecular stacking and performance. The results showed that synergistically regulating the central unit through fluorination and trifluoromethylation improved the photovoltaic performance the most.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Jiage Song, Fangfang Cai, Can Zhu, Honggang Chen, Qingya Wei, Dongxu Li, Chujun Zhang, Rui Zhang, Jun Yuan, Hongjian Peng, Shu Kong So, Yingping Zou
Summary: This study introduces a new design concept for low-cost nonfullerene OSC acceptors, which, despite the reduced conjugated length, still achieve moderate performance with significantly decreased synthesis costs. Furthermore, the addition of alkyl chains to the beta site of thiophenes is found to be beneficial for enhancing charge carrier transport efficiency.
Article
Energy & Fuels
Rajkumar Barla, Bimlesh Lochab, Anupam Agrawal, Amaresh Mishra, Muhammed L. Keshtov, Ganesh D. Sharma
Summary: In this study, the introduction of the large bandgap guaiacol-based small molecule (SMD) in ternary organic solar cells improved the power conversion efficiency (PCE) and suppressed energy loss. By optimizing the ternary blend P:SMD:Y6, a higher open circuit voltage (V-OC) and lower energy loss were achieved, leading to an overall PCE of 15.37%.
Article
Chemistry, Multidisciplinary
Peijin Zheng, Jian Xu, Fei Peng, Shengming Peng, Junxu Liao, Hongbin Zhao, Ledong Li, Xiangyan Zeng, Heyu Yu
Summary: The dye BT5, with a carbazole-containing triarylamine as the electron-donating unit, shows better photovoltaic performance, broader absorption spectrum, and higher molar extinction coefficient in DSCs compared to BT4 and BT6. Incorporating the BT unit into the dye backbone can lead to a pronounced electron transfer effect, affecting the absorption bands, Stokes shifts, and overall power conversion efficiency of DSCs.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Jingyu Shi, Zhenyu Chen, Hui Liu, Yi Qiu, Shuncheng Yang, Wei Song, Ziyi Ge
Summary: The substantial efforts in molecular design of A-DA 'D-A' type non-fullerene acceptors (NFAs) have led to a power conversion efficiency (PCE) exceeding 19% in single junction organic solar cells (OSCs). Effective modification methods include asymmetric geometry strategy, selenium-substitution, and end-group engineering. In this study, two novel selenium-substitution asymmetric NFAs, AsymSSe-2F and AsymSSe-2Cl, were synthesized and their synergistic modification effects on device performance were investigated. The blending of AsymSSe-2F with the wide-bandgap and high crystallinity polymer D18 resulted in a remarkable PCE of 18.31% and an excellent fill factor of 79.46%, attributed to broadened absorption, enhanced pi-pi stacking, balanced carrier mobilities, and fine phase-separation morphology. The combined modification of asymmetric geometry and selenium substitution in NFAs shows promise for fabricating high performance OSCs.
ADVANCED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Jinna Zhang, Ruixiang Peng, Kuibao Yu, Jinfeng Ge, Yuntong Guo, Dandan Li, Yi Qiu, Ziyi Ge
Summary: The isogenous acceptor strategy is shown to effectively enhance the efficiency of ternary organic solar cells. By introducing m-BTP-PhC6 as the second acceptor, the absorption range is expanded and the energy level alignment is optimized, resulting in improved photovoltaic performance.
Article
Polymer Science
Shaoheng Xu, Wen Wang, Hongtao Liu, Xinyu Yu, Fei Qin, Hao Luo, Yinhua Zhou, Zhong'an Li
Summary: The development of wide-bandgap polymer donors with complementary absorption and compatible energy levels with NIR absorbing nonfullerene acceptors is crucial for achieving high-performance OSCs. In this study, a new thiophene-fused diazabenzo[k]fluoranthene derivative has been synthesized as the electron-deficient unit to construct an efficient D-A copolymer donor. The resulting OSCs, using this donor and a NIR absorbing acceptor, achieved a record power conversion efficiency of 11.8%.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Xiang Xu, Chaoyuan Sun, Jianhua Jing, Tianqi Niu, Xiao Wu, Kai Zhang, Fei Huang, Qinghua Xu, Jun Yuan, Xinhui Lu, Yonghua Zhou, Yingping Zou
Summary: The introduction of the third material BTP-CC in organic solar cells allows for optimization in light absorption spectrum, BHJ morphology, and charge recombination, resulting in higher conversion efficiency and improved device stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yuanpeng Xie, Linglong Ye, Yunhao Cai, Xue Zhang, Jinqiu Xu, Tao Wang, Feng Liu, Yanming Sun
Summary: This study systematically investigated the aggregation behaviors of a new nonfullerene acceptor C10-IT4F through hot solution casting and thermal annealing, revealing that processing methods have a significant impact on the performance of OSCs. Excessive aggregation can decrease PCE, while enhancing J-aggregation can lead to higher PCE in OSCs.
Article
Multidisciplinary Sciences
Chengliang He, Zeng Chen, Tonghui Wang, Ziqiu Shen, Yaokai Li, Jiadong Zhou, Jianwei Yu, Huiyu Fang, Yuhao Li, Shuixing Li, Xinhui Lu, Wei Ma, Feng Gao, Zengqi Xie, Veaceslav Coropceanu, Haiming Zhu, Jean-Luc Bredas, Lijian Zuo, Hongzheng Chen
Summary: Efficient organic solar cells with high luminescence and charge collection are achieved by blending an asymmetric non-fullerene acceptor BO-5Cl with PM6 donor, resulting in a record-high electroluminescence external quantum efficiency of 0.1% and a power conversion efficiency of over 15%. Incorporating BO-5Cl as the third component in a widely-studied PM6:BO-4Cl blend further enhances the certified power conversion efficiency to 18.2%.
NATURE COMMUNICATIONS
(2022)
Article
Polymer Science
Wendi Shi, Yuzhong Huang, Kangqiao Ma, Xiaodong Si, Wanying Feng, Ruohan Wang, Jiaxin Guo, Wei Ma, Shijie Wang, Andrew Clulow, Lester Barnsley, Zhaoyang Yao, Chenxi Li, Xiangjian Wan, Yongsheng Chen
Summary: A polymer acceptor, PX-1, is synthesized using a polymerization strategy with grafted small molecule acceptors. This approach allows for freedom of end groups, efficient terminal packing, enhanced π-π interactions, and facilitated charge transport. All-polymer organic solar cells based on PM6:PX-1 achieve a promising efficiency of 13.55%. This study presents an alternative pathway for designing high-efficiency polymer acceptors through careful regulation of small molecule acceptors and linker units.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Jung-Min Ji, Hyun Jae Lee, Haoran Zhou, Yu Kyung Eom, Chul Hoon Kim, Hwan Kyu Kim
Summary: This study develops three new D-ir-A-structured organic dyes with extended ir-conjugation, which can adjust the HOMO/LUMO levels and expand the light absorption range. These dyes have promising features such as enhanced charge transfer and good power conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yabing Tang, Hong Zheng, Xiaobo Zhou, Zheng Tang, Wei Ma, Han Yan
Summary: The semitransparent and colorful properties of organic solar cells (OSCs) have attracted significant academic interests. A strategy utilizing molecular doping is proposed to enhance the photovoltaic performance of semitransparent OSCs by improving short-circuit current and fill factor. These findings present a new pathway for overcoming the compromise between photovoltaic performance and optical transmittance in semitransparent OSCs, and hold promise for future commercialization.
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
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
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
Multidisciplinary Sciences
Zhenrong Jia, Qing Ma, Zeng Chen, Lei Meng, Nakul Jain, Indunil Angunawela, Shucheng Qin, Xiaolei Kong, Xiaojun Li, Yang (Michael) Yang, Haiming Zhu, Harald Ade, Feng Gao, Yongfang Li
Summary: Reducing energy loss of sub-cells is critical for high performance tandem organic solar cells. Here, the authors design and synthesize an ultra-narrow bandgap acceptor through replacement of terminal thiophene by selenophene in the central fused ring, achieving efficiency of 19% for tandem cells.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jing Guo, Beibei Qiu, Xinxin Xia, Jinyuan Zhang, Shucheng Qin, Xiaojun Li, Xinhui Lu, Lei Meng, Zhanjun Zhang, Yongfang Li
Summary: By adjusting the thermal annealing treatment conditions and compositions of mixed acceptors, a desirable hierarchical morphology is achieved in ternary small-molecule organic solar cells (SM-OSCs). The optimized morphology enables efficient charge generation and extraction, leading to an excellent power conversion efficiency of 17.06%. Furthermore, the ternary SM-OSCs show high tolerance to device fabrication conditions and film thickness, making them suitable for large-area manufacture and future practical applications.
ADVANCED ENERGY MATERIALS
(2023)
Article
Multidisciplinary Sciences
Tengfei Li, Gangjian Hu, Liting Tao, Jizhong Jiang, Jingming Xin, Yawen Li, Wei Ma, Liang Shen, Yanjun Fang, Yuze Lin
Summary: High-sensitivity organic photodetectors (OPDs) with strong near-infrared (NIR) photoresponse have been developed by introducing quinoid-terminals with high Mulliken-electronegativity, extending the absorption range to below silicon bandgap. These OPDs exhibit high detectivity (D*) in the NIR range, surpassing the performance of commercial InGaAs photodetectors. Furthermore, a spectrometer prototype and NIR imaging have been successfully demonstrated using these OPDs.
Article
Chemistry, Physical
Weiping Wang, Baofeng Zhao, Heng Zhao, Zhiyuan Cong, Liuchang Wang, Haimei Wu, Wei Ma, Zhi Yang, Zihui Meng, Chao Gao
Summary: A series of asymmetric A-pi-D-pi'-A non-fullerene acceptors were designed and synthesized, and h-IEICO-4F and h-IEICO-4Cl showed excellent photovoltaic performances due to their special molecular structures and electron-attracting properties, with an efficiency of 11.65% achieved for the J52:h-IEICO-4F device.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Multidisciplinary Sciences
Zhong Zheng, Jianqiu Wang, Junzhen Ren, Shijie Wang, Yafei Wang, Wei Ma, Lei Zheng, Hao Li, Yanjie Tang, Shaoqing Zhang, Jianhui Hou
Summary: Meniscus-guided coating is widely used in the printing process of photovoltaic electronics and offers outstanding depositing accuracy, functional diversity, and operating convenience. However, there is still limited understanding about the hydrodynamic behaviors of bulk heterojunction ink and the key dynamic parameter that governs film formation. In this study, we establish a principle to accurately evaluate the Hamaker constant and reveal the critical effect of precursor film length on flow evolution, polymer aggregation, and final morphology. Our prediction method for precursor film length enables accurate tracing of the optimal coating speed. Furthermore, a power conversion efficiency of 18.39% has been achieved in a 3-cm(2) cell using blade coating, with only a slight reduction from 19.40% in a 0.04-cm(2) cell using spin coating.
Article
Engineering, Electrical & Electronic
Dingwei Li, Yitong Chen, Yingjie Tang, Kun Liang, Huihui Ren, Fanfan Li, Yan Wang, Guolei Liu, Chunyan Song, Lei Meng, Bowen Zhu
Summary: Organic/inorganic hybrid phototransistors are a newly emerging class of advanced optoelectronic devices that possess remarkable sensing performance in a broad spectrum and are promising for large-area matrix integration and wearable applications. The rational customization of hybrid heterojunctions allows for extraordinary photoelectric behaviors and in-sensor computing functions. In this Spotlight on Applications, the recent progress and applications of organic/inorganic hybrid phototransistors in photodetection, sensor arrays, flexible electronics, and in-sensor computing are reviewed.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Multidisciplinary Sciences
Hongmei Zhuo, Xiaojun Li, Jinyuan Zhang, Can Zhu, Haozhe He, Kan Ding, Jing Li, Lei Meng, Harald Ade, Yongfang Li
Summary: This study synthesizes giant molecule acceptors with different numbers of subunits using a stepwise synthetic method and investigates the influence of subunit numbers on their photovoltaic performance. The results show that the subunit number has a significant impact on the charge transfer state yield, lifetime, and power conversion efficiency of the acceptors-based devices.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jingwei Xue, Hafiz Bilal Naveed, Heng Zhao, Baojun Lin, Yilin Wang, Qinglian Zhu, Baohua Wu, Zhaozhao Bi, Xiaobo Zhou, Chao Zhao, Ke Zhou, Wei Ma
Summary: This study investigates the influence of component miscibility and film formation kinetics on film morphology during processing with different solvents. It is found that good miscibility helps maintain the desired morphology, while poor miscibility leads to phase separation and decreased average power conversion efficiency.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
