H-terminated SCD Epitaxial Wafer

H-terminated Diamond
Epi Wafer

Hydrogen-terminated single-crystal diamond epitaxial wafers for p-channel H-diamond FETs and RF Schottky diodes. Surface 2D hole gas enables high-mobility p-channel operation.

H-terminated Diamond Epitaxial Wafer

H-terminated SCD Epi Wafer — intrinsic epi with surface 2D hole gas (visual identity shared with SCD plate per handbook)

Surface 2D Hole Gas — The H-Diamond FET Foundation

Hydrogen termination of the diamond surface creates a thin layer of mobile holes (2DHG) just below the surface. This is the basis of the famous H-diamond FET — a p-channel transistor with high mobility and low power consumption.

Surface 2D Hole Gas (2DHG)

Hydrogen-terminated surface creates a high-mobility p-type channel. The 2DHG layer enables room-temperature H-diamond FET operation with carrier mobilities orders of magnitude higher than bulk p-doped diamond.

p-Channel H-Diamond FETs

Room-temperature p-channel transistors for RF, high-frequency, and low-power applications. The 2DHG channel enables fast switching and low on-resistance in the p-channel configuration.

H-Termination Process Control

We engineer the surface hydrogenation conditions for consistent 2DHG performance. Plasma vs wet-chemical termination, hydrogen plasma power, and surface preparation all affect final channel characteristics.

Device Applications

Devices Built on H-terminated Diamond Epi

H-terminated diamond enables p-channel transistors and RF Schottky diodes with high mobility and room-temperature operation.

H-Diamond p-Channel FETs

RF, high-frequency, low-power

p-channel field-effect transistors with 2DHG surface channel. High mobility, fast switching, low on-resistance. For RF amplifiers, high-frequency switches, and low-power logic.

H-Diamond Schottky Diodes

RF and high-frequency rectification

Schottky diodes on H-terminated intrinsic epi. The clean intrinsic surface (no bulk doping) gives lower reverse leakage and faster switching for RF and high-frequency rectification.

Quantum-Effect Devices

H-surface states, 2DHG physics

H-termination enables quantum-effect devices exploiting the 2DHG surface states. For research applications in diamond surface physics and quantum sensing.

Sister Product

Looking for B-doped SCD epi?

Our SCD Epi Wafer (B-doped) uses boron-doped p+ substrate for power Schottky diodes, p-n diodes, PiN diodes, and p-channel vertical MOSFETs. Both substrate variants share the diamond epi foundation — different doping, different application focus.

H-termination specifications are partner-level

Sign in to see the standard H-termination processes, intrinsic layer thickness ranges, and 2DHG mobility targets. Custom DFM available for partner-specified device targets.

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Specify your H-terminal epi target

Tell us your target device structure (p-channel FET / RF Schottky) and wafer dimensions — we'll respond with a Custom DFM plan and a quote within 48 hours.