Article
Chemistry, Physical
Yufu Yu, Wuxi Tao, Linqiao Wang, Yang-Dan Tao, Zeyan Peng, Xiaolong Zheng, Changhao Xiang, Bin Zhao, Chang-Zhi Li, Songting Tan
Summary: This study develops low-cost and thickness-insensitive non-conjugated electron transporting layers for organic solar cells. PEDETA-DBO shows better photovoltaic performance, with the ability for electron acceptors to penetrate into the electrolyte network for efficient electron extraction, demonstrating desirable thickness-insensitive properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Li-Na Liu, Maria Khlil, Jia Li, Zi-Wen Xu, Guanghui Xie, Jingjing Li, Xike Gao, Hongxiang Li, Jianhua Yao, Wei-Shi Li
Summary: The integration of a small amount of 3-(hexyldimethylammonio)propane-1-sulfonate zwitterionic side chain into a diketopyrrolopyrrole ambipolar polymer can enhance interchain interaction, promote crystallization, and improve hole and electron mobilities by 3.9- and 8.2-fold, respectively.
CHEMICAL COMMUNICATIONS
(2021)
Article
Energy & Fuels
Li Tian, Jianhua Jing, Haoran Tang, Yuanying Liang, Zhicheng Hu, Muhammad Rafiq, Fei Huang, Yong Cao
Summary: This study designed a series of novel n-doped conjugated polyelectrolytes with high doping levels and conductivity, synthesized from bis-isatin and bis-oxindole monomers. The evolution of counterions further alters their n-doping behaviors and work function tunability. Used as electron transport materials in nonfullerene polymer solar cells, they can achieve high power conversion efficiencies over 16%.
Article
Materials Science, Multidisciplinary
Qian Li, Kang-Hua Li, Li-Na Liu, Zhong-Xin Xue, Zi-Wen Xu, Wei-Shi Li
Summary: The research found that conjugated polyelectrolytes modified with zwitterionic side chains exhibit enhanced hydrophilicity and improved photocatalytic hydrogen production.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Mariacecilia Pasini, Francesco Galeotti, Wojciech Mroz, Benedetta Maria Squeo, Silvia Luzzati, Chiara Botta, Guido Scavia, Umberto Giovanella
Summary: The use of conjugated polyelectrolytes (CPEs) as interfacial layers (ILs) is an effective strategy to improve the efficiency of organic light-emitting diodes (OLEDs), organic solar cells (OSCs), and organic transistors. This study reports the development of bifunctional poly[(2,7-(9,9'-bis(6'-diethoxylphosphorylhexyl)-fluorene)-alt-(2,7-(9,9'-bis(6?-trimethylammonium bromide)hexyl)-fluorene)] (PF-NBr-EP) as a cathode IL (CIL) for various electronic and optoelectronic devices. The properties of the CPEs containing phosphonate (EP) and ammonium (NBr) moieties, which were used to synthesize the PF-NBr-EP copolymer, were investigated to understand the behavior of the PF-NBr-EP chemical structure in the devices. The performance of OLEDs and OSCs incorporating different CILs was analyzed based on established active layers.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Zheng Bo, Meiqi Zhou, Shiyuan Zhou, Yajing Song, Zhu Liu, Honggang Liao, Huachao Yang, Jianhua Yan, Kefa Cen, Xiulin Fan, Qian Yu, Kostya (Ken) Ostrikov, Ju Li
Summary: An anti-electrolytic strategy using physical zwitterionic waterproofing in aqueous electrolytes has been revealed, which improves electrochemical stability and maintains high ionic conductivity.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Ji-Su Yun, Orynbassar Mukhan, Woosuk Cho, Ji-Sang Yu, Hirokazu Munakata, Kiyoshi Kanamura, Sung-Soo Kim
Summary: Understanding the charge transfer resistance at solid-liquid or solid-solid interfaces is crucial for understanding the intrinsic properties of cathode active particles. However, estimating the DOD-dependent charge transfer resistance is challenging due to the complex structure of composite electrodes. By arranging micro-sized spherical cathode active particles into a cylindrical cavity trap on a microelectrode, the interfacial behavior of the particles in different electrolyte systems can be evaluated and electrochemical parameters can be calculated from the resultant Tafel plot.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Soumitra Sau, Suman Kalyan Samanta
Summary: In this study, triphenylamine-based donor-acceptor conjugated microporous polymers (PTPA-AQ and PTPA-AM) were synthesized for efficient visible-light driven oxidative hydroxylation of phenylboronic acids. PTPA-AQ demonstrated higher BET surface area and better photocatalytic activity with yields up to 96%.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Organic
Xue-Lin Zheng, Hao-Sheng Lin, Bo-Wen Zhang, Shigeo Maruyama, Yutaka Matsuo
Summary: A conjugated donor-acceptor antiaromatic porphyrin was synthesized and successfully applied in a perovskite solar cell, leading to a significantly increased power conversion efficiency.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Vivian Nketia-Yawson, Benjamin Nketia-Yawson, Jea Woong Jo
Summary: Using conjugated polyelectrolytes (CPEs) as interfacial work function modifiers significantly improves the hole carrier mobility in hybrid methylammonium lead iodide perovskite-conjugated polymer field-effect transistors (FETs).
ORGANIC ELECTRONICS
(2023)
Article
Chemistry, Physical
Baofeng Zhao, Weiping Wang, Zhiyuan Cong, Liuchang Wang, Haimei Wu, Shengna Liu, Chao Gao
Summary: This study explores the performance of small-molecule electron-acceptors with twisted main chain geometry in polymer solar cells, developing a novel acceptor i-V-4F to broaden its absorption range. Through matching with different polymer donors, a high conversion efficiency was achieved in PSCs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Elisa Lassi, Benedetta Maria Squeo, Roberto Sorrentino, Guido Scavia, Simona Mrakic-Sposta, Maristella Gussoni, Barbara Vercelli, Francesco Galeotti, Mariacecilia Pasini, Silvia Luzzati
Summary: Conjugated polymers with alkyl-potassium-sulfonate side chains have been investigated as anode interlayers in inverted geometry P3HT:PC61BM devices. The results show that the conjugated backbone of CPEs needs to be tailored for effective anode modification and a good energy-level match with the photoactive layer. Additionally, the sulfonate moieties in CPEs play a role in solubility, self-doping, and hole selectivity of the top electrode.
Article
Chemistry, Physical
Yang Wang, Lu Zhou, Chao Zhang, Chao Zuo, Bin Du, Xiangchun Li, Wen-Yong Lai
Summary: This study reports a star-burst macromolecular acceptor based on an acceptor-pi-donor-pi-acceptor structure for nonfullerene organic solar cells. The introduction of noncovalent interactions in the peripheral groups enables better control of molecular distortion, leading to improved light absorption and conversion efficiency.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Engineering, Environmental
Wenxiao Zhang, Xiaodong Li, Xiuxiu Feng, Xiaoyan Zhao, Junfeng Fang
Summary: By using ligand-biphenyl-3,3',5,5'-tetracarboxylic acid butyl amine (BPTC-BN) to passivate defects at the SnO2/perovskite interface, the size and quality of perovskite grains could be improved, leading to enhanced performance of planar PSCs. This interface passivation strategy not only increases the efficiency and open voltage of the devices, but also substantially improves their operational stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Donghwan Koo, Ungsoo Kim, Yongjoon Cho, Junghyun Lee, Jihyung Seo, Yunseong Choi, Kyoung Jin Choi, Jeong Min Baik, Changduk Yang, Hyesung Park
Summary: This study successfully enhanced the performance and stability of perovskite solar cells through a graphene-assisted electron transport layer, achieving a power conversion efficiency of 21.2% and notably improved operational stability.
CHEMISTRY OF MATERIALS
(2021)