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Tanabe Lab
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The lab creates materials that store light and change its color, supporting the light technologies of the future.
AboutAbout the lab
Luminescent materials that support the next generation of photonics
The Tanabe Lab aims to develop new photofunctional materials that will support future photonics technologies.
The lab designs and synthesizes phosphors for LED lighting, wavelength-conversion materials for solar power generation, and glass for optical fiber amplifiers, and studies their optical properties.
Undergraduate students are assigned to the Materials Science Course to carry out their graduation research (in graduate school, the Materials Science Course of the Department of Human and Environmental Studies, Graduate School of Human and Environmental Studies).
Key terms
- Long-Persistent Phosphor
- A material that continues to glow for several seconds to many hours after the light source is removed. It is used in glow-in-the-dark paints and other applications.
- Phosphor
- A material that receives energy from light, electron beams, or other sources and emits light of a different color.
- Rare-Earth Elements
- A group of elements, such as europium and cerium, that are essential for luminescent materials and magnets.
NewsLab news
A doctoral student won an Excellent Poster Award at a glass research meeting
Assistant Professor Xu won the Progress Award of the Ceramic Society of Japan
Professor Tanabe won the Rare Earth Society of Japan Award (Shiokawa Award)
ResearchResearch themes
The lab focuses on developing inorganic photofunctional glass and ceramic materials for next-generation photonics, and on studying their optical properties and structures.
*Illustrative imageLong-Persistent Phosphors That Store Light
So that they can store light even under white LED illumination, the lab has developed new long-persistent phosphors that can be charged with blue light, using materials design based on the electronic structure of solids. It is also working on diversifying the afterglow colors and extending them into the near infrared.
*Illustrative imagePhosphors for White LED Lighting
To make europium, which emits narrow-band red light, glow efficiently under LED light, the lab is developing new oxynitride phosphors. It also aims to create light-emitting devices based on glass-ceramics and translucent ceramics.
*Illustrative imageLuminescent Thermometers That Measure Temperature with Light
The lab studies luminescent thermometers, which determine temperature from quantities such as the ratio of emission intensities. It is developing luminescent thermometers based on transition metal ions and rare-earth ions, which emit light that passes easily through living tissue and enable a highly reliable approach.
*Illustrative imageWavelength Conversion to Improve Solar Cell Efficiency
By adding rare-earth elements to the cover glass of crystalline silicon solar cells, the lab gives it a function that converts sunlight to wavelengths the cell responds to more readily, aiming to improve the efficiency of converting light into electricity.
MembersFaculty
The Tanabe Lab consists of faculty, postdoctoral researchers, administrative staff, and doctoral, master's, and undergraduate students (including international students).
- ProfessorSetsuhisa Tanabe
- Assistant ProfessorJian Xu
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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: “Glow In The Dark D20 Dice” Dark Elf Dice / CC BY-SA 4.0 (cropped)
- Long-Persistent Phosphors That Store Light: “Phosphorescent pigments 4 min” FK1954 / Public domain (cropped)
- Phosphors for White LED Lighting: “Red LED” Mister rf / CC BY-SA 4.0 (cropped)
- Luminescent Thermometers That Measure Temperature with Light: “Luminiscence of transparent nanophase glass-ceramics with ions ZnO and Er3+” Pavel P ifmo / CC BY 4.0 (cropped)
- Wavelength Conversion to Improve Solar Cell Efficiency: “Silicon heterojunction solar cell” Radiotrefoil / CC BY-SA 4.0 (cropped)
- Related lab (Kogiso Lab): “Peridotite 5773” HAROUY Jean-Michel / CC BY-SA 4.0 (cropped)
- Related lab (Morinari Condensed Matter Theory Lab): “Tile levitates by Meissner effect” Garrett Pennell / CC BY-SA 3.0 (cropped)
- Related lab (Yoshida Lab (Hisao Yoshida)): “TiO2Photocatalysis” Ibhadon AO, Fitzpatrick P. / CC BY-SA 3.0 (cropped)
- Related lab (Solid Earth Science (Mamoru Kato) Lab): “Seismogram on historical seismometer at Institute of Geophysis of the Czech Academy of Science (19)” Petr Brož (Czech Academy of Science) / CC BY-SA 4.0 (cropped)
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