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High Performance Materials
Kondo Takashi Laboratory

Photonic materials and perovskite solar cells/Soft matters and amorphous materials

High-performance wavelength-conversion devices using III-V compound semiconductors

We have been working on wavelength-conversion devices utilizing optical nonlinearities of III-V compound semiconductors. Superior properties of these materials are expected to lead to higher performances compared to conventional devices based on oxide dielectrics. We are developing wavelength conversion devices using a novel crystal growth technique, sublattice reversal epitaxy, we have developed for fabricating nonlinear optical devices.

Metal-halide perovskite-type semiconductors

Metal-halide perovskite-type materials are a new semiconductor family. It has been revealed that these materials are promising for solar-cell applications. However, fundamental properties of these materials are not clearly understood. We are now studying fundamental properties and novel crystal growth techniques of metal-halide perovskite-type semiconductors in order to realize innovative photonic devices.

Challenge from mechanical self-organization to elucidate the physical properties of nonequilibrium soft matter/amorphous material (Tanaka group)

Materials without a periodic structure, such as soft matter and amorphous materials, have unique mechanical and thermal properties that differ significantly from crystals and contribute to humankind in various fields. Until now, research on disordered systems has been based on the center-of-mass structure of particles, but the physical characteristics of these systems remain elusive. To overcome this situation, in addition to the conventional thermodynamic viewpoint, we are challenging to elucidate the structural features of non-equilibrium solid-state materials, such as glasses and gels, as well as the physical mechanisms behind universal and unique mechanical and thermal properties of these materials, from a new kinetic viewpoint of “mechanical self-organization”.

  • GaAs/AlGaAs wavelength conversion device
  • GaAs/AlGaAs wavelength conversion device

RSM of a perovskite heterostructure
RSM of a perovskite heterostructure

Mechanical network of a glass and particle motion during destabilization
Mechanical network of a glass and particle motion during destabilization

Member

  • Professor Takashi KONDO
  • Specialized field: Photonic materials and semiconductor photonic devices
Project Professor Satoshi UCHIDA
Project Lecturer Youhei NUMATA
Research Associate Masato SOUTOME
Senior Program Advisor Hajime TANAKA
Project Research Associate Michio TATENO

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