Figure 1. SEM image of a SiC trench processed by RIE-800iPC

ICP Etching Process for Realizing SiC Trench MOSFETs

Introduction One example of a 4H-SiC power device is the MOSFET (Metal Oxide Semiconductor Field Effect Transistor). While planar MOSFETs have been developed in the past, trench-type MOSFETs have attracted attention to meet demands for high efficiency, such as “low on-resistance.” Samco has been working on trench processing using ICP etching equipment, which is essential…