The University of Tokyo · 재료과학
Tatsuo Hasegawa 교수의 연구실은 유기 반도체 소재의 나노구조 제어와 고성능 유기 트랜지스터 기반 소자의 개발을 핵심으로 합니다. 특히, 고순도 단일결정 유기 반도체 필름의 웨이퍼 스케일 제조 기술, 기하학적 불안정성 원리를 활용한 초박막 다층 구조 제어, 그리고 고리취성 표면에서의 균일한 필름 성장 기법을 개발하고 있습니다. 이는 유기 전자소자, 특히 고성능 및 안정성 확보가 가능한 유기 반도체 소자 응용에 기여하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
We report ambipolar field-effect characteristics observed in metal-insulator-semiconductor field-effect transistor (MISFET) device structures based on organic single crystals of the quasi-one-dimensional (Q1D) Mott-Hubbard insulator (BEDT-TTF)$({\mathrm{F}}_{2}\text{TCNQ})$. The main aspects of the measured field-effect properties are well described by the symmetric-gate FET model, which considers the device symmetry of triode FET structures. The temperature-dependent nonlinear nature in the gat
A unique solution-based technology to manufacture self-assembled ultrathin organic-semiconductor layers with ultrauniform single-molecular-bilayer thickness over an area as large as wafer scale is developed. A novel concept is adopted in this technique, based upon the idea of geometrical frustration, which can effectively suppress the interlayer stacking (or multilayer crystallization) while maintaining the assembly of the intralayer, which originates from the strong intermolecular interactions
We report structural, electronic, and field-effect transistor characteristics of layered crystalline donor–acceptor semiconductors with dialkylated benzothienobenzothiophenes.
Meniscus, a curvature of droplet surface around solids, takes critical roles in solution-based thin-film processing. Extension of meniscus shape, and eventual uniform film growth, is strictly limited on highly lyophobic surfaces, although such surface should considerably improve switching characteristics. Here, we demonstrate a technique to control the solution meniscus, allowing to manufacture single-crystalline organic semiconductor (OSC) films on the highest lyophobic amorphous perfluoropolym
We report synthesis and examination of the electronic properties of an isomorphous series of mixed-stack organic charge-transfer complexes, composed of [bis(ethylenedithio)tetrathiafulvalene] (BEDT-TTF)-based electron donors and electron acceptors of halogen-substituted tetracyanoquinodimethanes (TCNQ's). Single crystals of ${(\mathrm{B}\mathrm{E}\mathrm{D}\mathrm{T}\ensuremath{-}\mathrm{T}\mathrm{T}\mathrm{F})(\mathrm{M}\mathrm{e}}_{2}\mathrm{TCNQ}),$ (BEDT-TTF)(ClMeTCNQ), and ${(\mathrm{B}\mat
