GaN violet laser on silicon 2 inch GaN on Silicon HEMT Epi wafer UV LD Epi wafer

Introduction to GaN on Silicon HEMT Epi wafer
Silicon based gallium nitride HEMT epitaxial wafer is a high electron mobility transistor (HEMT) epitaxial wafer based on gallium nitride (GaN) material. Its structure mainly includes AlGaN barrier layer, GaN channel layer, AlN buffer layer, and silicon substrate. This structure enables gallium nitride HEMTs to have high electron mobility and saturation electron velocity, making them suitable for high-power and high-frequency applications.
Structural characteristics
AlGaN/GaN Heterojunction: Gallium Nitride HEMT is based on AlGaN/GaN heterojunction, which forms a high electron mobility two-dimensional electron gas (2DEG) channel through the heterojunction.
Depletion type and enhancement type: Gallium nitride HEMT epitaxial wafers are divided into depletion type (D-mode) and enhancement type (E-mode). Depleted type is the natural state of GaN power devices, while enhanced type requires special processes to achieve.
Epitaxial growth process: Epitaxial growth includes AlN nucleation layer, stress relaxation buffer layer, GaN channel layer, AlGaN barrier layer, and GaN cap layer.
manufacturing process
Epitaxial growth: Growing one or more layers of gallium nitride thin films on a silicon substrate to form high-quality epitaxial wafers.
Passivation and cap layer: SiN passivation layer and u-GaN cap layer are usually used on gallium nitride epitaxial wafers to improve surface quality and protect the epitaxial wafers.
application area
High frequency applications: Due to the high electron mobility and saturation electron velocity of gallium nitride materials, gallium nitride HEMTs are suitable for high-frequency applications such as 5G communication, radar, and satellite communication.
High power applications: Gallium nitride HEMTs perform well in high-voltage and high-power applications, suitable for fields such as electric vehicles, solar inverters, and industrial power supplies.

Product specifications

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