Article
Optics
Ting Jiang, Yiru Wang, Wanxin Huang, Haifeng Ling, Guofeng Tian, Yunfeng Deng, Yanhou Geng, Deyang Ji, Wenping Hu
Summary: This study introduces carboxyl groups into polymer dielectrics to achieve high device mobility and optical figures of merit at a low operating voltage. It also improves image sensing and memory capabilities.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Lukasz Janasz, Michal Borkowski, Paul W. M. Blom, Tomasz Marszalek, Wojciech Pisula
Summary: Organic semiconductors face limitations in their practical applicability due to low environmental stability and poor charge carrier mobilities. Blending with thermoplastic polymers and elastomers can overcome these restrictions and induce new material properties, showcasing great potential for flexible and stretchable electronics. Improved device properties such as charge carrier mobility, life-time, sensing ability, and mechanical behavior are achieved through blending with insulators, offering promise for various electronic devices and semiconductor classes.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Polymer Science
Adam Luczak, Angelina Torres Ruiz, Simon Pascal, Adrian Adamski, Jaroslaw Jung, Beata Luszczynska, Olivier Siri
Summary: The study found that using interlayer materials containing aliphatic side groups in OFET structures can reduce the number of charge carrier trapping sites at the dielectric active layer interface, leading to an increase in charge carrier mobility.
Article
Instruments & Instrumentation
Zongze Qin, Songyu Han, Dongfan Li, Chenyang Zhai, Wanlong Lu, Peng Wei, Yuanwei Zhu, Zhen Hu, Laju Bu, Guanghao Lu
Summary: Semiconducting polymers have a broad distribution of energy levels due to their polydispersity, resulting in charge density-dependent bulk mobility. This study proposes a method to measure the charge-density-dependent bulk mobility of conjugated polymer films using a field-effect transistor configuration. The gate-induced variation of bulk charge density ranges within +/- 10(18) cm(-3), depending on the energetic dispersion width of localized states. The field-effect bulk mobility and field-effect mobility near the semiconductor-dielectric interface can be simultaneously obtained from transistor characteristics using different gate voltage ranges.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Chemistry, Multidisciplinary
Marco Hoeppner, Bahman Kheradmand-Boroujeni, Joern Vahland, Michael Franz Sawatzki, David Kneppe, Frank Ellinger, Hans Kleemann
Summary: The high-frequency and low-voltage operation of organic thin-film transistors (OTFTs) is crucial for the commercial success of flexible electronics. While significant progress has been made, technology maturity remains a key challenge, including scalability, integrability, and device reliability.
Article
Chemistry, Multidisciplinary
Arulmozhi Velusamy, Chih-Hsin Yu, Shakil N. Afraj, Chia-Chi Lin, Wei-Yu Lo, Chia-Jung Yeh, Ya-Wen Wu, Hsin-Chun Hsieh, Jianhua Chen, Gene-Hsiang Lee, Shih-Huang Tung, Cheng-Liang Liu, Ming-Chou Chen, Antonio Facchetti
Summary: A novel family of quinoidal thienoisoindigo (TII)-containing small molecules with dicyanomethylene end-capping units and different alkyl chains were synthesized for n-type organic small molecules in solution-processable organic field effect transistors (OFETs). The detailed molecular structure, properties, and performance of the 2-hexyldecyl substituted derivative, TIIQ-b16, were systematically studied, revealing its potential as electron transporting semiconductors with enhanced ambient stability. The results suggest that constructing quinoidal molecules from TII moiety is an effective approach to improve n-type charge transport characteristics.
Article
Green & Sustainable Science & Technology
Rosarita D'Orsi, Cristian Vlad Irimia, Jeannette J. Lucejko, Bilge Kahraman, Yasin Kanbur, Cigdem Yumusak, Mateusz Bednorz, Francesco Babudri, Mihai Irimia-Vladu, Alessandra Operamolla
Summary: Lignin is an abundant biopolymer derived from industrial pulping processes, but its application as a fine material is limited due to the lack of knowledge about its molecular structure and properties. This study analyzes the structural and chemical-physical characteristics of two kraft lignins and demonstrates their efficient application as gate dielectric materials in organic field-effect transistors.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Nanoscience & Nanotechnology
Xiaohong Wang, Yingman Zhu, Zhen Liu, Ye Yuan, Longzhen Qiu
Summary: Physically blending semiconducting conjugated polymers with elastomeric materials and precisely controlling the resulting film structure provides an effective strategy to obtain intrinsically stretchable semiconducting polymers. The phase-separated ultrathin P3HT and SIS blend films maintain reproducible properties under 200 continuous stretch-release cycles at a strain of 50%, showing a balance between their mechanical and electrical properties. The deformability of the films is efficiently improved by blending, as demonstrated by both finite element analysis and dichroic ratio measurements.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Multidisciplinary Sciences
Ao Liu, Huihui Zhu, Taoyu Zou, Youjin Reo, Gi-Seong Ryu, Yong-Young Noh
Summary: This study presents the synthesis of wafer-scale ultrathin bismuth sulfide and tellurium semiconductors using room temperature thermal evaporation, which demonstrate high performance in complementary electronics. The fabricated thin-film transistors exhibit high mobility and stability, and complementary inverters show remarkable voltage transfer characteristics with a high gain. This work paves the way for scalable and cost-effective deposition of semiconductors for integrated electronics.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Zheng Chen, Shuming Duan, Xiaotao Zhang, Wenping Hu
Summary: A dual-function surfactant strategy was used to control the growth of large-area 2D organic semiconductor crystals, resulting in high-quality crystals and improved OFET mobility. This method opens up new possibilities for achieving high-performance OFETs with various high-quality 2D organic semiconductor crystals.
SCIENCE CHINA-CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Chunxing Ren, Long Cao, Ti Wu
Summary: Solution-processable organic semiconductors offer promise for the future of organic electronic products, but high-performance materials and mature processing technologies are needed. Meniscus-guided coating (MGC) techniques show great potential for large-area, low-cost film aggregation and compatibility with roll-to-roll processes, especially for high-performance organic field-effect transistors.
Article
Materials Science, Multidisciplinary
Ya-Shuan Wu, Ai-Chun Chang, Wei-Cheng Chen, Ender Ercan, Yi-Hsun Weng, Bi-Hsuan Lin, Cheng-Liang Liu, Yan-Cheng Lin, Wen-Chang Chen
Summary: A series of silane-based photoactive/conjugated self-assembled molecules were used as charge-trapping layers in synaptic phototransistors, demonstrating excellent memory behavior and simulation function, with potential in reducing energy consumption and achieving device miniaturization.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Remy Jouclas, Jie Liu, Martina Volpi, Lygia Silva de Moraes, Guillaume Garbay, Nemo McIntosh, Marco Bardini, Vincent Lemaur, Alexandre Vercouter, Christos Gatsios, Federico Modesti, Nicholas Turetta, David Beljonne, Jerome Cornil, Alan R. Kennedy, Norbert Koch, Peter Erk, Paolo Samori, Guillaume Schweicher, Yves H. Geerts
Summary: The charge transport of crystalline organic semiconductors is limited by dynamic disorder that tends to localize charges. This study proposes an innovative design that combines a chemical structure based on sulfur-rich thienoacene with a solid-state herringbone (HB) packing to overcome this limitation. Two new thienoacenes are synthesized and characterized, and their charge transport properties are investigated. The results show promising device performances and pave the way for the design of high-performing materials based on this new thienoacene.
Article
Polymer Science
Wei-Yao Tung, Cheng Pu, Yi-Fan Huang, Wei Xie, Chung-Fu Cheng, Yun-Yu Lai, Xiang Li, Heng-Yi Lin, Yueh-Ting Lai, Kun Chen, Chien-Lung Wang, Yu Zhu
Summary: This study synthesized a series of donor-acceptor conjugated polymers containing soluble benzimidazolone-dioxazine structures and investigated their performance in organic field effect transistor devices. The results showed that increasing the number of thiophene rings led to higher molecular weight polymers and improved device performance.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Taehoon Hwang, Eunyoung Park, Jungyoon Seo, Dashdendev Tsogbayar, Eun Ko, Chanwoo Yang, Hyungju Ahn, Dong Yun Lee, Hwa Sung Lee
Summary: This study investigates the correlation between organic field-effect transistors (OFETs) and organic charge-modulated field-effect transistors (OCMFETs) to improve the understanding of driving mechanisms in OCMFETs and optimize their device performance. By introducing self-assembled monolayers with different functional groups on the gate dielectric surface, the impact of surface characteristics on the electrical behavior of both devices is explored. The dipole moment of the dielectric surface is identified as a critical control variable in the performance correlation between OFET and OCMFET devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
