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CORPORATION REPORT

β-Ga2O3

Novel Crystal Technology, Inc. is a carve-out venture from Tamura and a technology transfer venture from the National Institute of Information and Communications Technology (NICT). Novel Crystal Technology, Inc. is working on the R&D of β-type gallium oxide (β-Ga2O3), a promising candidate for semiconductor material in new-generation power devices. Gallium oxide power devices with medium to high breakdown voltage are highly expected to contribute to energy saving.

β-Ga2O3 SBDs on high-quality 100-mm β-Ga2O3 epitaxial wafer



Characteristics of β-Ga2O3

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β-Ga2O3 is a new semiconductor material for power devices and has larger band-gap energy than SiC and GaN. Therefore, it will likely be used to make that can withstand high voltages and low resistance semiconductors. In addition, since growing β-Ga2O3 single crystal form a melt it is possible to provide high quality substrates with low cost compared with SiC and GaN to the market.

■Relationship between theoretical on-resistance and breakdown voltage

■Reasons for low cost of β-Ga2O3

	SiC, GaN	β-Ga2O3
Growth rate	Slow	Fast
Substrate process	Difficult	Easy
Growth method	Vapor growth method	Melt growth method

Applications

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1) Power electronics

Electric vehicles

Railroad vehicles

Renewable energy

Smart grid

Electric vehicles

Railroad vehicles

Renewable energy

Smart grid

Electric vehicles

Railroad vehicles

Renewable energy

Smart grid

Electric vehicles

Railroad vehicles

Renewable energy

Smart grid

2) Devices in extreme environment

Nuclear reactors (radiation)

Space (radiation, electromagnetic waves)

Nuclear reactors (radiation)

Space (radiation, electromagnetic waves)

Nuclear reactors (radiation)

Space (radiation, electromagnetic waves)

Nuclear reactors (radiation)

Space (radiation, electromagnetic waves)

3) Other applications

High sensitivity image sensors

Scintillators (medical, security)

Ultraviolet sensors

High sensitivity image sensors

Scintillators (medical, security)

Ultraviolet sensors

High sensitivity image sensors

Scintillators (medical, security)

Ultraviolet sensors

Press release from Novel Crystal Technology, Inc.
(Jumps to the webpage of Novel Crystal Technology, Inc.)

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2022.03.01 World’s first successful epitaxial deposition of gallium oxide on a 6-inch wafer using the HVPE method
2021.12.24 The world’s first ampere-class 1200-V breakdown-voltage gallium oxide Schottky barrier diode
2021.06.16 Gallium oxide vertical transistor with the world’s highest breakdown voltage
2021.06.16 High-quality 100-mm β-type gallium oxide epitaxial wafers have been developed
2019.04.18 Development of high-quality β-type gallium oxide film growth technique has been achieved