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semiconductor×埼玉大学 - List of Manufacturers, Suppliers, Companies and Products

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Stronger and device-friendly SiC semiconductors than Si.

SiC semiconductor, metal-oxide-semiconductor (MOS) junction device, power device, hard electronics, quantum effect device.

Silicon carbide (SiC) can form a SiO2 film on its surface through thermal oxidation, and with the mass production of 8-inch wafers and the development of device fabrication technology, it is a semiconductor material that is as easy to apply in devices as Si semiconductors. Additionally, it possesses properties similar to diamond, such as wide bandgap, high radiation resistance, high thermal resistance, and robustness. SiC truly is a material that takes the best of both Si and C (diamond)! Furthermore, recent research over the past few years has revealed that SiC contains single defects similar to diamond NV centers, which can be utilized as single photon sources or spins, opening up pathways for applications in quantum computing, quantum photonics, and quantum sensing.

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Achieving high performance in optoelectronic devices using semiconductor nanostructures.

Keywords: Semiconductor nanostructures, high-efficiency solar cells, crystal growth, spectroscopic measurements.

We are conducting research to enhance the performance of optoelectronic devices using semiconductor microstructures at the nanometer scale (one billionth of a meter). For example, by utilizing structures called "quantum dots," which confine electrons in three-dimensional space within a very narrow region of about a dozen nanometers in a semiconductor, we can artificially adjust the energy of the confined electrons, thereby exhibiting excellent properties. By arranging numerous quantum dots within solar cells, these quantum dots can absorb light in wavelength ranges that are typically not absorbed, allowing us to efficiently convert the energy from sunlight, which has a broad spectrum, into electricity, significantly improving power generation efficiency. Such semiconductor nanostructures are expected to be applied not only in high-efficiency solar cells but also in high-brightness light-emitting devices and high-sensitivity sensors. To utilize them as actual devices, it is necessary to precisely control the shape, size, uniformity, and arrangement of the nanoscale structures and to fabricate them at high density, for which we are developing high-precision fabrication techniques for microstructures. Additionally, we are evaluating the properties of these materials using various spectroscopic measurement techniques.

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