- Address
- 305-0047 1-2-1 Sengen Tsukuba Ibaraki JAPAN [Access]
Accepting Students
External affiliations
- 中央大学兼任講師
Research
- Keywords
Functional Polymers, Supramolecular Polymers, Organic Memory Device
PublicationsNIMS affiliated publications since 2004.
Published patent applications
- 電子装置、及びトランジスタの駆動方法 (2025)
- スターポリマーを含む電荷蓄積材料 (2017)
- ポリスチレン含有アームを備えた金属フタロシアニン・コア型スターポリマー及びその製造方法 (2016)
Society memberships
日本化学会, 高分子学会
Research Center for Macromolecules and Biomaterials
Polymer Nanostructure Control for Organic Electronics
Precision Polymer Synthesis, Organic Memory Device, Organic Semiconductor
Overview
There is a growing demand for memory devices that can meet emerging societal needs, such as wearable and disposable memory technologies. Organic nonvolatile memories based on flexible organic materials are promising candidates; however, challenges remain in terms of device performance and durability. We have developed organic field-effect transistor (OFET) memories using precisely designed polymer materials as the memory layer (floating gate), which plays a key role in charge storage. By taking advantage of the structural versatility of organic materials, we aim to tune device performance through molecular and nanostructural design and to develop new materials suitable for wearable electronics.
Novelty and originality
● Precision Synthesis of Polymers with Controlled Three-Dimensional Structures
● Novel Nanofloating-Gate Materials Based on Functional Polymers
● Solution-Processable Memory Materials for Facile Device Fabrication
● Tuning Device Performance through Molecular Design of Polymers
● Multivalued Logic-in-Memory Applications
Details
We have developed OFET memory devices using star-shaped polymers with a metal phthalocyanine core as the memory material. In these polymers, the metal phthalocyanine molecules that serve as charge-storage sites are surrounded by polymer chains, enabling the facile formation of thin films containing nanofloating-gate structures through solution processing. Moreover, molecular design allows the charge-storage sites to be arranged at high density in three dimensions, enabling control of the memory window and charge-retention time while achieving high device endurance.
Summary
● Development of Organic Transistor Memory Using Functional Molecule-Cored Star Polymers as Nanofloating-Gate Materials
● Memory performance can be tuned through molecular design.
Thin films can be readily fabricated by solution processing.
● We aim to extend this approach toward the development of high-performance organic memories, logic-in-memory devices, and neuromorphic devices.
