Optical Microscope Image of the MOSCAPs and Diamond Deep Depletion MOSFETs (image) American Institute of Physics Share Print E-Mail Caption Left: Optical microscope image of the MOSCAPs and diamond deep depletion MOSFETs (D2MOSFETs) of this work. Top right: Scanning electron microscope image of a diamond D2MOSFET under electrical investigation. S: Source, G: Gate, D: Drain. Bottom right: D2MOSFET concept. The on-state of the transistor is ensured thanks to the accumulation or flat band regime. The high mobility channel is the boron-doped diamond epilayer. The off-state is achieved thanks to the deep depletion regime, which is stable only for wide bandgap semiconductors. For a gate voltage larger than a given threshold, the channel is closed because of the deeply and fully depleted layer under the gate. Credit Institut NÉEL Usage Restrictions This image may be used only with appropriate credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.