A microsecond time resolved current collapse test setup dedicated to GaN-based Schottky diode characterization

This paper presents a test setup to characterize current collapse effects in power diodes such as GaN-based Schottky junctions. The setup principle and its main parts are described. Current/voltage transients can be recorded very shortly (2 microseconds on wafer prober) after reverse to forward switching. The related trapping effects are analyzed through temperature dependent measurements.