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Iino Lab
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A lab aiming at large-area thin-film devices made from liquid-crystalline organic semiconductors.
AboutAbout the lab
Creating organic semiconductors whose molecules align spontaneously.
The Iino Lab studies large-area thin-film semiconductors for imaging devices such as displays.
In particular, the lab focuses on "liquid-crystalline organic semiconductors," in which molecules spontaneously assemble and align.
A key feature is that high-quality semiconductor films can be formed even with simple coating methods.
The group handles everything from materials development to property evaluation and device applications in-house, with researchers from different backgrounds, such as electrical engineering, chemistry, and physics, working together.
Key terms
- Organic semiconductor
- A semiconductor made of organic compounds with a carbon backbone. Films can be formed by coating or printing.
- Liquid crystal
- A state of matter that flows like a liquid while its molecules remain aligned in order, as in a crystal.
- Thin-film transistor
- A switching element made from thin films that turns the flow of electric current on and off.
NewsLab news
A student received the Department of Electrical and Electronic Engineering FY2025 Outstanding Bachelor's Student Award
A student received the Best Student Award at the international conference SSDM
A master's student received the Department of Electrical and Electronic Engineering FY2024 Outstanding Master's Thesis Award
ResearchResearch themes
The lab studies large-area thin-film semiconductors for imaging devices that handle information input and output. Its work covers the development of liquid-crystalline organic semiconductor materials, evaluation of their electrical properties, film fabrication methods, and device prototyping.
*Illustrative imageDeveloping new liquid-crystalline materials
Using rod-shaped liquid crystal molecules that align in layers, the lab has developed organic semiconductor materials that dissolve easily in solvents and are heat-resistant. It is now also developing materials that allow electrons to be injected easily from electrodes.
*Illustrative imageInvestigating how charge is transported
Using the time-of-flight (TOF) method, which measures the current that flows when light is applied, the lab investigates how charge is transported inside liquid-crystalline organic semiconductors. It is also advancing evaluation based on transistor characteristics.
*Illustrative imageFilm fabrication that takes advantage of liquid crystallinity
Taking advantage of the fluidity of liquid crystals, the lab forms flat, highly crystalline films by simple methods such as spin coating. It is also exploring new printing methods that make use of liquid crystallinity.
*Illustrative imageDevices using liquid-crystalline organic semiconductors
The lab has made thin-film transistors from liquid-crystalline organic semiconductors and realized devices that operate at low voltage. It is now prototyping integrated transistors, organic EL devices, and organic photodiodes.
MembersFaculty
The members of the Iino Lab consist of faculty, researchers, doctoral, master's, and undergraduate students, joint researchers from companies and other organizations, and secretaries.As of 2025
- Associate ProfessorHiroaki IinoPublications ↗
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Nematic liquid crystal” Ingo Dierking / CC BY-SA 4.0 (cropped)
- Developing new liquid-crystalline materials: “Liquid crystal smectic texture” Alexprague / CC BY-SA 4.0 (cropped)
- Investigating how charge is transported: “6,6'-dibromoindigo 3D BS” Mplanine / CC0 (cropped)
- Film fabrication that takes advantage of liquid crystallinity: “Spinner” Alison Chaiken / CC BY-SA 3.0 (cropped)
- Devices using liquid-crystalline organic semiconductors: “OLED dot Matrix Samsung Galaxy S20 Ultra 5G A” PantheraLeo1359531 / CC BY 4.0 (cropped)
- Related lab (ファム研究室): “Hard disk head on platter” Mfield, Matthew Field / CC BY-SA 3.0 (cropped)
- Related lab (大見研究室): “Ehysteresis” Ndthe / CC BY 3.0 (cropped)
- Related lab (浦壁・原田研究室): “IGBT 2441” Daniel*D / CC BY-SA 3.0 (cropped)
- Related lab (鈴木研究室): “Terahertz freq. metamaterial modulator” Hou-Tong Chen (Los Alamos National Laboratory) / Public domain (cropped)
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