Professor Chris Van de Walle's research on metal impurities in nitride semiconductors

Atomic Imperfections: UCSB researchers find that trace amounts of transition metal impurities in gallium nitride semiconductors kill LED efficiency

“Increasing the efficiency of light emission is a key goal for the solid-state lighting industry,” said UCSB Materials Professor Chris Van de Walle, who led the research team. “Our work focuses attention on the detrimental impact of transition metals and the importance of suppressing their incorporation.”

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