Abstract
Abstract
We developed an in situ measurement system based on a synchrotron radiation nanobeam X-ray diffraction technique combined with a pump–probe method to investigate lattice deformation induced by the inverse piezoelectric effect in AlGaN/GaN high-electron-mobility transistor devices. Static and dynamic measurements using ultrafast X-ray pulses successfully captured changes in the c-plane lattice spacing in the AlGaN barrier layer coincided with the rising and falling edge of the gate voltage pulse at nanosecond resolution. This nanoscale time-resolved analysis reveals the influence of transient currents flowing in the device on the lattice deformation response during application of a gate voltage.
Funder
Japan Society for the Promotion of Science
Subject
General Physics and Astronomy,General Engineering
Cited by
3 articles.
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