Flash of light creates high-performance materials without heating the surface beneath

Researchers have developed a method using ultrafast light flashes to rearrange semiconductor structures without damaging the underlying glass substrate. This technique allows for high-temperature processing on heat-sensitive materials, potentially advancing solar energy and electronic device manufacturing.
Why it matters
This breakthrough overcomes a major thermal limitation in semiconductor manufacturing, enabling the use of transparent conducting glass for more efficient solar cells and advanced electronics.
edited by Sadie Harley , reviewed by Robert Egan
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Add as preferred source A flash of light rearranges a crystal, and another flash puts it back while the glass below stays cool. Credit: The Gottesman Research Group A flash of light lasting a fraction of a millisecond could help create better materials for solar energy. Researchers used ultrafast heating at rates of up to 10 million degrees Celsius per second to rearrange the atoms inside a semiconductor, producing a version that generated up to 50 times more electrical current from light than the same material in its ordinary form.
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