Article
Chemistry, Physical
Jianhua Jing, Sheng Dong, Kai Zhang, Zhisheng Zhou, Qifan Xue, Yu Song, Zurong Du, Minrun Ren, Fei Huang
Summary: This study reports a simple yet effective strategy for constructing high-performance semitransparent organic solar cells (ST-OSCs) by introducing a small molecule, 2PACz, into a low-donor content active layer. This strategy improves the fill factor, mitigates charge recombination, strengthens charge extraction, and achieves high AVT and PCE.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Dahyun Jeong, Geon-U Kim, Dongchan Lee, Soodeok Seo, Seungjin Lee, Daehee Han, Hyeonjung Park, Biwu Ma, Shinuk Cho, Bumjoon J. Kim
Summary: The development of two sequentially fluorinated PT donors, PT-2F and PT-4F, with high backbone rigidity and temperature-dependent aggregation behavior, resulted in highly efficient OSCs with optimized blend morphology and high PCEs of 15.6% and 16.4%, respectively. By decreasing the energy levels and increasing the open-circuit voltages of the OSCs, the PT-4F polymers demonstrated improved crystalline structures in thin films for efficient charge transport.
ADVANCED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Youle Li, Xiyue Yuan, Seoyoung Kim, Yue Zhang, Dongsheng Xie, Xiaoxin Tan, Changduk Yang, Xuelong Huang, Fei Huang, Yong Cao, Chunhui Duan
Summary: PTs are promising electron donors in inorganic solar cells due to their simple structures and scalability. This study investigates the effect of molecular weight on the blend film morphology and photovoltaic performance of PT solar cells, finding that higher molecular weight leads to improved power conversion efficiency, finer phase separation structures, and more compact molecular packing. Additionally, higher molecular weight polymers exhibit better device stabilities.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Xiaoxin Tan, Youle Li, Xiyue Yuan, Seoyoung Kim, Yue Zhang, Changduk Yang, Fei Huang, Yong Cao, Chunhui Duan
Summary: In this study, highly efficient PT solar cells processed from a non-halogenated solvent were reported. The power conversion efficiency reached 15.68%, which is the highest efficiency record for non-halogenated processed PT solar cells to date. The appropriate solution temperature contributed to enhanced charge transfer efficiency, balanced hole electron mobility, and reduced trap-assisted recombination. These results provide valuable implications for improving the efficiency of PT solar cells via environmentally-friendly processing.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jingyang Xiao, Xiao'e Jia, Chunhui Duan, Fei Huang, Hin-Lap Yip, Yong Cao
Summary: A novel fluorinated polythiophene derivative, P4T2F-HD, is introduced to significantly improve the morphology of bulk heterojunction active layers in organic solar cells. By optimizing the film morphology and interface structure, a record power conversion efficiency of 13.65% for polythiophene-based OSCs was achieved through the use of P4T2F-HD:Y6-BO films processed from nonhalogenated solvents.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Dawei Li, Huarui Zhang, Xinyue Cui, Ya-Nan Chen, Nan Wei, Guangliu Ran, Hao Lu, Shenhua Chen, Wenkai Zhang, Cuihong Li, Yahui Liu, Yuqiang Liu, Zhishan Bo
Summary: Three nonfused ring electron acceptors were designed and synthesized with the concept of halogenation. By incorporating F or/and Cl atoms, the performance of these acceptors was improved, resulting in high-efficiency organic solar cells.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Xiaofeng Lin, Yuying Wang, Jianyu Wu, Zilun Tang, Wenjing Lin, Li Nian, Guobin Yi
Summary: By rationally designing the interface, the heterostructure of PFN-Br/BPQDs achieved a PCE of 15.03% for high-performance non-fullerene OSCs, offering an inspiring route for future advancements in this field.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Mingwei An, Qingqing Bai, Sang Young Jeong, Jianwei Ding, Chaoyue Zhao, Bin Liu, Qiming Liang, Yimei Wang, Guangye Zhang, Han Young Woo, Xiaohui Qiu, Li Niu, Xugang Guo, Huiliang Sun
Summary: This study designs and synthesizes a new thiophene derivative, FETVT, and incorporates it into a polymer to form a high-performance polythiophene derivative PFETVT-T, which exhibits excellent compatibility with the acceptor L15 and achieves a record PCE of 11.81%. Remarkably, a ternary blend design further boosts the PCE of PFETVT-T to over 16%. These findings offer hope for high-performance, stable, and cost-effective polymer solar cells.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Jianghao Jin, Qiao Wang, Kaige Ma, Wenfei Shen, Laurence Alphonse Belfiore, Xichang Bao, Jianguo Tang
Summary: With the emergence of ADA'DA-type non-fullerene acceptors, the power conversion efficiencies of organic photovoltaic devices have reached 20% in recent years. These acceptors bring new vitality to the field by enriching NFA types and having excellent compatibility with donor materials. They also promote the research of various device architectures and processing techniques. This review summarizes the recent progress in polymer solar cells with efficiency over 17% and discusses the future opportunities and challenges of organic photovoltaic commercialization.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wei Liu, Jun Yuan, Can Zhu, Qingya Wei, Songting Liang, Huotian Zhang, Guanhaojie Zheng, Yunbin Hu, Lei Meng, Feng Gao, Yongfang Li, Yingping Zou
Summary: This study proposes a new design strategy for organic solar cell electron acceptors and successfully develops a quasi-macromolecule with an A-π-A structure. This quasi-macromolecule improves the long-term stability and power conversion efficiency of organic solar cells, and possesses synthetic flexibility and high molecular weight.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xiyue Yuan, Yunli Zhao, Yue Zhang, Dongsheng Xie, Wanyuan Deng, Junyu Li, Hongbin Wu, Chunhui Duan, Fei Huang, Yong Cao
Summary: This paper reports a new PT with cyano-group substituents for high-efficiency OSCs. The cyano-group endows the PT with a deep-lying energy level and strong interchain interaction, resulting in improved device performance and power conversion efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Shanmuganathan Venkatesan, Tzu-Hsien Hsu, Xin-Wen Wong, Hsisheng Teng, Yuh-Lang Lee
Summary: By using transparent photoelectrodes and counter electrodes in tandem DSSCs, and regulating the film thicknesses of the top and bottom cells, both light harvest and charge transfer performance can be improved simultaneously, leading to an increased conversion efficiency of the solar cells.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yantao Mei, Zhitao Shen, Soumya Kundu, Emma Dennis, Shan Pang, Furui Tan, Gentian Yue, Yueyue Gao, Chen Dong, Rong Liu, Weifeng Zhang, Makhsud Saidaminov
Summary: Researchers have developed an efficient and cost-effective hole transport layer (HTL) based on electrochemically deposited polyaniline (PAN) for perovskite photovoltaics, achieving a photovoltaic efficiency of 20.7% for a small-area inverted cell, the highest efficiency among any polyaniline-based perovskite solar cells.
CHEMISTRY OF MATERIALS
(2021)
Article
Multidisciplinary Sciences
Ying Zhang, Kuan Liu, Jiaming Huang, Xinxin Xia, Jiupeng Cao, Guangming Zhao, Patrick W. K. Fong, Ye Zhu, Feng Yan, Yang Yang, Xinhui Lu, Gang Li
Summary: The study demonstrates an effective graded bulk-heterojunction (G-BHJ) strategy using nonhalogenated solvent sequential deposition for nonfullerene acceptor (NFA) organic solar cells, achieving outstanding power conversion efficiency (PCE) of 17.48%. Advanced techniques such as depth-profiling X-ray photoelectron spectroscopy (DP-XPS) and angle-dependent grazing incidence X-ray diffraction (GI-XRD) enable visualization of morphology and crystallinity gradient distributions, leading to high PCEs of thick OSCs. The use of nonhalogenated solvent in G-BHJ OSC via open-air blade coating achieves a record 16.77% PCE by suppressing unfavorable phase separation in bulk-heterojunction. Overall, the G-BHJ strategy shows great promise for highly efficient, eco-friendly, and scalable organic solar cells.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Chenhao Liu, Yiwei Fu, Jinpeng Zhou, Liang Wang, Chuanhang Guo, Jingchao Cheng, Wei Sun, Chen Chen, Jing Zhou, Dan Liu, Wei Li, Tao Wang
Summary: In this study, the intermolecular interactions among a series of BDT-type polymer donors were tuned through the utilization of alkoxythiophene additives, resulting in the self-assembly of nanofibrils. By using these fibrillar polymer donors to construct pseudo-bulk heterojunction solar cells, improved device performance was achieved.
ADVANCED MATERIALS
(2023)
