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Miyashita Lab
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A lab that explores solar cells and optical devices using quantum dots and III-V semiconductors.
AboutAbout the lab
Creating nanocrystals for next-generation optical devices.
The Miyashita Lab, jointly with the Yamaguchi Lab, conducts basic research on creating nanometer-sized materials and investigating their properties.
The central focus is quantum dot structures that confine electrons and holes in three dimensions, and the lab also works with quantum nanowires (quantum wires).
The Miyashita Lab also develops technologies for solar cells, such as multijunction solar cells combining III-V semiconductors, and studies methods for evaluating them.
The lab's website is shared with the Yamaguchi Lab and the Kaizu Lab, and they are introduced together on the same site.
Key terms
- Quantum dots
- A nanometer-sized structure that confines electrons and holes in three dimensions.
- III-V semiconductors
- Semiconductors such as GaAs and InGaP. Single-crystal growth techniques are well established, and there is considerable freedom in the lattice constant of the crystals.
- Multijunction solar cells
- A solar cell that combines III-V semiconductors and achieves efficiency far exceeding that of single-junction types.
ResearchResearch themes
Together with the Yamaguchi Lab, the Miyashita Lab advances crystal growth to create nanostructures such as quantum dots, and evaluates their properties. It also works on technology development for solar cells, including multijunction solar cells using III-V semiconductors.
*Illustrative imageCrystal Growth and Fabrication of Quantum Dots
The lab closely examines the process by which quantum dots and quantum nanowires (quantum wires) form, gaining insight into the mechanisms of crystal growth. Based on this, it develops excellent fabrication techniques for these structures.
*Illustrative imageEvaluation of Optical Properties and Device Applications
The lab evaluates and analyzes the optoelectronic properties of the fabricated quantum dots and quantum nanowires. It also studies applications to next-generation devices such as semiconductor lasers, solar cells, single-photon sources, and mid-infrared light-emitting devices.
*Illustrative imageDevelopment of Scanning Probe Microscopes
To explore new physical properties at the nanoscale and atomic scale, the lab also researches and develops new scanning probe microscopes. Research and development of the processes and evaluation equipment needed for nanotechnology is another important research theme.
*Illustrative imageMultijunction Solar Cells and Evaluation Methods
Together with the Yamaguchi Lab, the lab develops technologies for multijunction solar cells combining III-V semiconductors and for other unique solar cells, and studies original evaluation methods. It also collaborates with the Sogabe Lab and the Kaizu Lab.
MembersFaculty
Members are introduced on a page shared by the Yamaguchi, Miyashita, and Kaizu labs, which lists faculty members, administrative assistants (secretaries), and doctoral, master's, and undergraduate students.As of 2025
- Associate ProfessorNaoya Miyashita
VoicesStudent voices
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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: “Molecular-beam epitaxy system at LAAS 0506” Guillaume Paumier (user:guillom) / CC BY-SA 3.0 (cropped)
- Crystal Growth and Fabrication of Quantum Dots: “Quantum Dots ( )” National Institute of Standards and Technology / Public domain (cropped)
- Evaluation of Optical Properties and Device Applications: “Photoluminescence of a solar cell as a function of temperature” Pablo García-Linares / CC BY-SA 4.0 (cropped)
- Development of Scanning Probe Microscopes: “ESR-STM at QNS in Ewha - front view” Rickinasia / CC BY-SA 4.0 (cropped)
- Multijunction Solar Cells and Evaluation Methods: “Luminescent solar concentrator model” Levita.lev at English Wikipedia / CC BY-SA 3.0 (cropped)
- Related lab (Shen Lab): “Sargent Group quantum dot solar cell” Lukasz Brzozowski / CC BY-SA 3.0 (cropped)
- Related lab (Tsukamoto Lab): “2N140 PNP Germanium Alloy Junction Transistor closeup” John Maushammer / CC BY 4.0 (cropped)
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