Elethron plans to establish a UK manufacturing capability for aluminium nitride substrates, as reported by Semiconductor Today, starting with 2-inch wafers for customer evaluation, device fabrication trials and industrial qualification, giving compound semiconductor manufacturers a prospective domestic source of a critical material.

Elethron said in its announcement that it has begun work on initial crystal-growth capability for a 2-inch wafer platform, which will support small-batch supply to UK and European epitaxial foundries, semiconductor manufacturers and laboratories, with a pathway towards 4-inch wafer production.

Elethron said it is also developing AlN4RF, the first of a series of industry co-development programmes, linking AlN wafer engineering with downstream processing, packaging and product qualification for microwave and high-power RF applications in radar, satellite communications and radio infrastructure.

According to Semiconductor Today, aluminium nitride combines ultra-wide bandgap, high thermal conductivity and deep-UV transparency, making it a platform for power electronics, RF devices and optoelectronics designed for extreme environments.

Elethron Ltd of London is an advanced materials and process engineering company developing high-performance semiconductor materials and engineered substrates for ultrawide-bandgap technologies, according to the announcement.

Founder and CEO Hamid Soorghali said in the announcement that the UK relies on foreign and challenged supply chains for wide-bandgap materials, exposing domestic industry to geopolitical and supply risks, and that UK production would provide a long-term sovereign source. He said the immediate priority is substrates manufacturers can process, test and qualify in their devices, with planned demonstrators intended to move AlN from evaluation into device fabrication.

The plan reflects UK efforts to build upstream semiconductor materials capability, with Elethron saying its investment will augment existing national strengths in compound semiconductor research, epitaxy, device fabrication and metrology.

Published forecasts vary widely, but GM Insights puts the AlN semiconductor market at $139.1m in 2026, growing 12.2 per cent a year to $392.4m by 2035, a small base for a new entrant.

For the sector, 24Chemical Research reports that Japan leads high-performance AlN substrate production through MARUWA, Kyocera, Toshiba Materials and Denka, the concentration Elethron’s sovereign-supply argument targets.

The wider signal for the sector is that substrate start-ups are pairing small-batch wafers with co-development programmes, so specifications are shaped with downstream manufacturers before volume production begins.

Source: Semiconductor Today / GM Insights / 24Chemical Research