Science

Sapphire-grown semiconductor film sets bandgap record

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Briefings

A Cornell University team led by Darrell Schlom demonstrated that adding silicon to aluminum gallium oxide thin films maintains electrical control at bandgaps wider than any previous semiconductor. This breakthrough, published in Nature, enables smaller, more efficient electronics capable of handling higher voltages. The study represents a significant step forward in semiconductor engineering, though the specific voltage limits and long-term stability remain to be fully quantified.

Key points

• Silicon doping in aluminum gallium oxide thin films preserves electrical control at bandgaps wider than any prior semiconductor.
• The research was published in Nature by a team led by Darrell Schlom at Cornell University.

Context

Semiconductors with wider bandgaps offer potential for smaller, more efficient electronics but are difficult to control. This study addresses that challenge by showing silicon addition maintains control at unprecedented bandgap widths.

Limitations

The specific voltage limits and long-term stability of the new material remain to be fully quantified. The evidence is from a single published study, and the research is still in its early stages.

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