• Organic Semiconductor Materials

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  • Flexible Devices with Printed Organic and Nanoparticle Materials

    We have developed flexible electronic devices on ultrathin (< 3 µm) plastic films by employing advanced printing technologies together with organic semiconductors, ferroelectric polymers, and metal nanoparticle inks. Our objective is to realize patch-type healthcare devices using the ultra-flexible sensor devices.
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  • Development of the OFET-Based Biosensors

    We have developed printed OFET-based biosensors that are fully flexible, and are currently striving to apply these sensors in the non-invasive detection healthcare biomarkers in externally secreted bodily fluids including sweat and saliva.
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  • Flexible and Stretchable Printed Physical Sensors

    We are developing flexible or stretchable physical sensors that employ ferroelectric polymers and stretchable paste inks applied using conventional printing methods. Our aim to utilize these devices in robot skins, healthcare, tactile sensors and other novel applications.
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  • Flexible Hybrid Electronics

    Organic thermal sensors and stacked interconnects are printed on plastic film substrates using conventional screen printing, and to which thin, small Si-LSI chips are mounted. This hybrid sensor combines the flexibility of organic electronics with the highly functional of silicon electronics. Using these devices, we have succeeded in measuring skin temperature and monitoring the temperature of commercial products, while wirelessly transmitting the data.
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  • Reverse Offset Printing

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  • 3D-Printed Electronics

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  • Development of the Metal Nanoparticle Ink

    We are developing metal nanoparticle ink that can be sintered at low-temperature to create high-performance printed TFT devices. We achieved a reduction of the energy barrier between semiconductor and electrodes by improving the nanoparticle design and ink formulation technology.
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  • Development of the Large Area Printing Processes

    We have developed the roll-to-roll inkjet printing process technology that can be applied to the fabrication of large-area, high-definition electronic circuits. With this technology, TFT arrays and sensor devices can be continuously fabricated directly on the wide-format film rolls.
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Invited Lecture
December 12, Professor Tokito gave an invited talk at The Society of Polymer Science Japan, Chugoku-Shikoku Branch 44th Lecture meetings.(Faculty of Engineering, Yamaguchi University)

News
We will exhibit our Research results at "Converting Technology Exhibition -JFlex 2019" in Tokyo Big Sight on Jan.30-Feb 1, 2019.

Invited Lecture
January 30, Professor Tokito will give an invited talk at The First German-Japanese Nanotechnology Commercialization Workshop.(Tokyo Big Sight, Tokyo)

Invited Lecture
December 26, Professor Tokito will give an invited talk at 第一回次世代放射光が拓くイノベーション 東北7大学次世代放射光学術シンポジウム.(Tohoku University, Miyagi)

Invited Lecture
December 19, Associate Professor Matsui will give an invited talk at The 28th Japan MRS Annual Meeting.(Kitakyushu International Conference Center, Fukuoka)

Invited Lecture
December 19, Associate Professor Nagamine will give an invited talk at The 28th Japan MRS Annual Meeting.(Kitakyushu International Conference Center, Fukuoka)

Invited Lecture
December 18, Professor Tokito will give a keynote lecture at The 28th Japan MRS Annual Meeting.(Kitakyushu International Conference Center, Fukuoka)

Invited Lecture
December 13, Associate Professor Matsui will give an invited talk at The 25th International Display Workshops (IDW).(Nagoya Congress Center, Aichi)

Result
A paper written by Project Researcher Yoshida titled "Three-dimensional interconnect layers inkjet printed on plastic substrates using continuous-wave xenon light sintering” was accepted by Jpn. J. Appl. Phys.

Articles
An article related to Professor Tokito titled "New development of printed electronics" was published in "JPCA(Japan Electronics Packaging and Circuits Association) NEWS" December issue.

Result
A paper co-written by Assistant Professor Takeda titled "3D monolithic integration in flexible printed organic transistors" was accepted by Nature Communication.

Invited Lecture
November 28, Professor Tokito gave an invited talk titled "Flexible and Printed Organic Electronics Development for IoT Sensor Applications" at the 2018 MRS Fall Meeting & Exhibit. (Hynes Convention Center, Boston)

Invited Lecture
November 16, Assistant Professor Sekine gave an Invited talk at 九州支部 九州エレクトロニクス実装学会(JIEP Kyusyu-branch Meeting)

Events
November 14, Professor Emeritus OTSUBO Yasufumi(Chiba University) gave a lecture as a Guest Speaker at The 162th ROEL Lecture Session.

Events
November 9, Dr.Satoru TSUIKI gave a lecture as a Guest Speaker at The 161th ROEL Lecture Session.

More NEWS    More RESEARCH RESULTS

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【Tokito, Office】
4-3-16 Jonan, Yonezawa, Yamagata
992-8510, JAPAN
YAMAGATA UNIVERSITY
Organic Electronics Research Center
(Bldg. 10)
Phone:+81-238-26-3725
Fax:+81-238-26-3788

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