A5064981581- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Thin-Film Transistor Technologies
- Force Microscopy Techniques and Applications
- Nanowire Synthesis and Applications
- Boron and Carbon Nanomaterials Research
- Molecular Junctions and Nanostructures
- Nonlinear Optical Materials Research
- Mechanical and Optical Resonators
The University of Tokyo
2022-2024
Abstract Some rodlike organic molecules exhibit exceptionally high layered crystallinity when composed of a link between π‐conjugated backbone (head) and alkyl chain (tail). These are aligned side‐by‐side unidirectionally to form self‐organized polar monomolecular layers, providing promising 2D materials devices. However, their interlayer stacking arrangements have never been tunable, preventing the unidirectional in whole crystals. Here, it is demonstrated that polar/antipolar can be...
Herein, we developed a practical method to produce high-performance organic thin-film transistors (OTFTs) based on highly layered crystalline semiconductors (OSCs) that form bilayer-type herringbone (b-LHB) packing and exhibit high intrinsic mobility. We applied the insulating polymer blend technique using typical b-LHB OSC of 2-octyl-benzothieno[3,2-b]naphtho[2,3-b]thiophene (2-C8-BTNT) fabricated polycrystalline (TFTs) via short-duration spin coating subsequent annealing. The use blends...
It is critical to understand molecular ordering processes in small-molecule organic semiconductor (OSC) films optimizing electronic device applications, although it difficult observe and investigate the characteristics at a mesoscopic or scale. Here, we report that friction force microscopy (FFM) allows visualizing transformation process from thermodynamically metastable phase stable We utilized 2-octyl-benzothieno[3,2-b]naphtho[2,3-b]thiophene (2-C8-BTNT) as typical highly...
Abstract The odd-even effects are renowned as a mysterious phenomenon in broad fields of science but have never been established an effective approach for materials engineering. We demonstrate that the parity alkyl carbon number n can cause alternating emergence polar/antipolar organic semiconductor crystals. This is achieved by development series polar rod-like molecules, composed linkage between extended π-core (head) and chains (tail), exhibiting both high layered crystallinity...