Article
Chemistry, Multidisciplinary
Ryoma Ohno, Yasuyuki Numata, Shigeaki Konaka, Shogo Yagura, Airi Kuroda, Mao Harada, Naoko Fujita, Naoki Hayakawa, Hidetaka Nakai, Alfredo Rosas-Sanchez, Daisuke Hashizume, Tsukasa Matsuo
Summary: A series of diarylgermylenes with different fused-ring bulky groups have been synthesized and investigated for their crystal structures and electronic properties, including dimeric and monomeric forms in solution.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2021)
Article
Chemistry, Multidisciplinary
Deyu Liu, Jaewan Mun, Gan Chen, Nathaniel J. Schuster, Weichen Wang, Yu Zheng, Shayla Nikzad, Jian-Cheng Lai, Yilei Wu, Donglai Zhong, Yangju Lin, Yusheng Lei, Yuelang Chen, Sangah Gam, Jong Won Chung, Youngjun Yun, Jeffrey B. -H. Tok, Zhenan Bao
Summary: Improving the stretchability of polymer semiconductors without compromising electrical properties was achieved by introducing conjugated rigid fused-rings with optimized bulky side groups. The polymer PIDT-3T-OC12-10% in the IDT system showed promising electrical and mechanical properties. The results emphasize the correlation between chemical structures, mechanical properties, and charge carrier mobility in polymer semiconductors.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Yu-Che Lin, Nian-Zu She, Chung-Hao Chen, Atsushi Yabushita, Heng Lin, Meng-Hua Li, Bin Chang, Ting -Fang Hsueh, Bing-Shiun Tsai, Po-Tuan Chen, Yang Yang, Kung-Hwa Wei
Summary: This study synthesized new A-DA & PRIME;D-A acceptors with different modes of halogenation and substitution to control their optical characteristics. Among various acceptor systems, the organic photovoltaic device incorporating the acceptor FhPDI-IC2F exhibited the highest power conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Yu-Che Lin, Nian-Zu She, Chung-Hao Chen, Atsushi Yabushita, Heng Lin, Meng-Hua Li, Bin Chang, Ting-Fang Hsueh, Bing-Shiun Tsai, Po-Tuan Chen, Yang Yang, Kung-Hwa Wei
Summary: In this study, new acceptor compounds with perylene diimide core structures and different end group units were synthesized and tested for their application in organic photovoltaic devices. The intensity of intramolecular charge transfer and absorption bands were enhanced by fusing dithiophenepyrrole moieties to the perylene diimide dimers. The research found that altering the end groups of the acceptor molecules can significantly affect the optical characteristics and power conversion efficiency of the devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Yang Liu, Yong Zhao, Shujing Lu, Kun Zhu, Quanliang Wang, Xiao Kang, Liangmin Yu, Shuixing Dai, Mingliang Sun
Summary: The newly synthesized fused-ring electron acceptors based on indacenodithieno[3,2-b] thiophene core unit and bromine-substituted end-capped unit show improved photovoltaic performance compared to traditional compounds, with the number and position of bromine atoms significantly affecting their properties, highlighting the vital role of bromination in enhancing photovoltaic performance.
Article
Chemistry, Multidisciplinary
Junjie Wang, Qingrui Luan, Pengchao Wang, Chenyu Han, Fuzhen Bi, Chunming Yang, Yonghai Li, Xichang Bao
Summary: Although NFREAs have lower synthetic costs, achieving high efficiencies in organic solar cells (OSCs) requires complex and expensive pre- or/and post-treatments. This study introduces phenylalkyl side groups (CnPh) to construct new NFREAs called BOR-CnPh without the need for additional treatments. The modified alkyl spacers of CnPh side groups control the acceptor's aggregation and regulate the interactions between donor (D) and acceptor (A). The optimization of the blend delivers efficient networks with a face-on orientation, resulting in the highest efficiency among as-cast OSCs based on NFREAs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Dong Meng, Rui Wang, Janice B. Lin, Jonathan Lee Yang, Selbi Nuryyeva, Yu-Che Lin, Shuai Yuan, Zhao-Kui Wang, Elizabeth Zhang, Chengyi Xiao, Danlei Zhu, Lang Jiang, Yepin Zhao, Zhenxing Li, Chenhui Zhu, Kendall N. Houk, Yang Yang
Summary: The study reports a new molecule SFIC-Cl, which exhibits significant potential in organic semiconductor materials and performs well in different devices. SFIC-Cl also demonstrates promising applications, particularly in solar cells.
ADVANCED MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Youdi Zhang, Yutong Ji, Yingyue Zhang, Wenqiang Zhang, Helong Bai, Mengzhen Du, Han Wu, Qing Guo, Erjun Zhou
Summary: This paper reviews the recent progress of Y6-derived asymmetric conjugated molecules, with a focus on the relationship between molecular structure, optoelectronic properties, and device performance. It provides a reference for the future design direction and challenges of this type of photovoltaic materials.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Tian-Jiao Wen, Zhi-Xi Liu, Zeng Chen, Jiadong Zhou, Ziqiu Shen, Yiqun Xiao, Xinhui Lu, Zengqi Xie, Haiming Zhu, Chang-Zhi Li, Hongzheng Chen
Summary: Despite recent progress, organic photovoltaics (OPVs) still need to work on balancing efficiency, stability, and cost. This study developed two non-fused electron acceptors which, when blended with a specific polymer, achieved the highest reported efficiency for fully unfused electron acceptors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Dou Luo, Zhengyan Jiang, Chengwei Shan, Lanqing Li, Chenghao Duan, Qian Liu, Zhaojin Wang, Kai Wang, Baomin Xu, Aung Ko Ko Kyaw
Summary: Fine-tuning the alkyl chains and end groups of non-fused ring electron acceptors (NFREAs) plays a crucial role in enhancing charge transfer and power conversion efficiency of organic solar cells (OSCs). This study developed a series of NFREAs with the same terminals and core unit but varying side chains and halogenated end groups, and found significant differences in efficiency and stability among the acceptors.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hiromasa Shibuya, Yeong Suk Choi, Taejin Choi, Sungyoung Yun, Juhee Moon, Yutaka Matsuo
Summary: In this study, we investigated the thermal stability and UV-Vis absorption patterns of [60]fullerene derivatives with different substituents. The introduction of sterically bulky groups lowered the vacuum deposition temperature and prevented aggregation among neighboring [60]fullerenes. This concept could contribute to expanding the use of evaporable [60]fullerene derivatives in organic thin-film electronics research fields.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Energy & Fuels
Zemin Wang, Guilong Cai, Jiayu Wang, Mengyang Li, Boyu Jia, Peiyao Xue, Xinhui Lu, Zheng Tang, Guojie Wang, Xiaowei Zhan
Summary: Molecular symmetry has slight effects on the absorption spectra, energy levels, and bandgaps, but notable effects on crystallinity, molecular packing, film morphology, and device performance. F7TC-1- and F7TC-2-based organic solar cells show significantly different power conversion efficiencies, mainly due to differences in molecular packing and film morphology.
Article
Chemistry, Inorganic & Nuclear
Yasuyuki Numata, Yuri Nishikawa, Konan Inoue, Hiroaki Ohnishi, Shigeaki Konaka, Tomoharu Tanikawa, Daisuke Hashizume, Tsukasa Matsuo
Summary: A series of bromostannylenes with different substituents have been obtained and their crystal structures have been determined by X-ray diffraction methods. The bulkier species exhibit monomeric structures, while the less bulky ones show polymeric structures in crystals. These compounds exist as monomers in solution.
Article
Chemistry, Organic
Kenta Suzuki, Hiroki Fukuda, Hayato Toda, Yoshitane Imai, Yuki Nojima, Masashi Hasegawa, Eiji Tsurumaki, Shinji Toyota
Summary: In order to investigate the effects of substituents on the helically fused anthracene system, bulky phenyl groups were introduced at sterically crowded positions. Three derivatives were synthesized and analyzed. The results showed that the helical structures expanded in the order of steric size of the substituents. The substituent effects on the optical and chiroptical properties were relatively small.
Article
Materials Science, Multidisciplinary
Guilong Cai, Yuhao Li, Jiayu Wang, Yiqun Zhang, Xinhui Lu, Jiarong Lian, Pengju Zeng, Yiping Wang, Xiaowei Zhan
Summary: Two nonfullerene acceptors with different bridge structures show effects on photovoltaic performance, with the BT-bridge enhancing the performance of the dimers more significantly compared to the TT-bridge.
ACS APPLIED POLYMER MATERIALS
(2021)
