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Hiramatsu Lab
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The lab designs and creates semiconductors and superconductors that do not yet exist in the world.
AboutAbout the lab
Designing and discovering materials that do not yet exist
The Hiramatsu Lab searches for new semiconductors and superconductors that have never existed before.
The lab narrows down which materials to pursue using chemical design guidelines and calculations, then synthesizes them and confirms their properties.
The lab makes both bulk samples and thin films itself, and often builds the experimental equipment it needs.
The lab shares facilities with the Hosono Lab and the Kamiya-Katase Lab and carries out research in collaboration with them.
Key terms
- First-principles calculation
- A method of calculating the properties of a material from the principles of quantum mechanics, without using experimental values
- Epitaxial thin film
- A thin film grown on a substrate in an ordered orientation, inheriting the arrangement of the crystal underneath
- Superconductivity
- A phenomenon in which electrical resistance drops to zero when a material is cooled below a certain temperature
NewsLab news
View More ↗ResearchResearch themes
The lab searches for entirely new materials that may lead to practical applications in the future. Using original design guidelines and calculations, it narrows down candidates, then makes functional semiconductors and superconductors by various synthesis methods and tests them.
*Illustrative imageFinding semiconductors from design guidelines
Light-emitting diodes face the 'green gap' problem: efficiency fails to improve only for green. Using original design guidelines, such as exploiting nonbonding orbitals, together with first-principles calculations, the lab narrowed down candidates and showed experimentally that the perovskite-type sulfide SrHfS3 emits green light and can be made both p-type and n-type.
*Illustrative imageMaking unknown nitride semiconductors
Nitrogen forms strong bonds, so nitride semiconductors are difficult to synthesize. By combining materials prediction from first-principles calculations by the Oba Lab at the same university with high-pressure synthesis, the lab discovered CaZn2N2, which had not been reported at the time, and also succeeded in growing epitaxial thin films of it by molecular beam epitaxy.
*Illustrative imageDesigning analytical equipment from scratch
Trace amounts of hydrogen in semiconductors affect device operation and reliability. The lab reconsidered the principle of thermal desorption spectroscopy and redesigned the instrument, achieving a system that can quantify hydrogen with high sensitivity. It also builds many of its sample synthesis tools in-house.
*Illustrative imageThin-film growth of iron-based superconductors
The lab developed a method for doping hydrogen into thin films of the iron-based superconductor SmFeAsO and reported superconductivity at 48 K (-225 °C). It is also studying how to enhance superconductivity in thin FeSe by introducing a high density of carriers with an electric double-layer transistor.
MembersFaculty
The Hiramatsu Lab consists of faculty members, researchers, and doctoral and master's students.As of 2026
- ProfessorHidenori HiramatsuPublications ↗
- Assistant ProfessorKota HanzawaPublications ↗
VoicesStudent voices
Compiled from answers by students who were in the lab. Ratings and reviews reflect individual students' experiences, not the lab's official views.
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RelatedLabs similar to Hiramatsu Lab
Kamiya LabSchool of Materials and Chemical Technology, Department of Materials Science and EngineeringDevelopment of novel inorganic functional materials, materia…
Katase LabSchool of Materials and Chemical Technology, Department of Materials Science and EngineeringExploration of novel materials, semiconductors, energy conve…
Hayakawa LabSchool of Materials and Chemical Technology, Department of Materials Science and EngineeringOrganic and polymer materials, semiconductor-related polymer…
Sasagawa LabSchool of Materials and Chemical Technology, Department of Materials Science and EngineeringInorganic electronic materials, superconductivity, spintroni…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “InGaN crystal SEM+CL” FDominec / CC BY 4.0 (cropped)
- Finding semiconductors from design guidelines: “InGaN-based green LED” Mister rf / CC BY-SA 4.0 (cropped)
- Making unknown nitride semiconductors: “Crystal-GaN” Opto-p / Public domain (cropped)
- Designing analytical equipment from scratch: “Secondary Ion Mass Spectrometer (SIMS) Tube - DPLA - 2a22bbd17e faf628d93a557 (page 1)” Honig, Richard E. (Richard Edward) / CC BY 4.0 (cropped)
- Thin-film growth of iron-based superconductors: “Magnetic levitation of a superconductor” Your stepbro sunset / CC BY 4.0 (cropped)
- Related lab (神谷研究室): “Flexible display” U.S. Army RDECOM / CC BY 2.0 (cropped)
- Related lab (片瀬研究室): “Wire for ITER superconducting magnets ( )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Related lab (早川研究室): “The Bird of Happiness” Strugalina / CC BY 4.0 (cropped)
- Related lab (笹川研究室): “Superconductor-levitation” Pongkaew / CC0 (cropped)
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