A study published in Nature Electronics on August 28 uses polarization in gallium nitride layers to balance mobile electrons and holes without intentional doping.

A more uniform electric field limits local stress in the device. Researchers measured breakdown voltages above 3.9 kV for diodes and above 3.4 kV for transistors.

Potential applications include smaller power converters for energy systems or data centres. Laboratory breakdown voltage is not the same as a product’s permitted continuous operating voltage.

Further work must establish lifetime, manufacturing yield, packaging and whole-converter behaviour. The experiment alone does not determine electricity savings in a real installation.

Editorial estimate: successful development could lead to pilot converters in 2–5 years. Wider use depends on reliability and cost; its timing cannot yet be credibly established.