Overlooked indium selenide phase enables wafer-scale logic transistors

Just as carbon atoms arranged in different ways can form either graphite or diamond—the hardest natural material—semiconductor materials can also exhibit completely different properties depending on their atomic arrangements. Now, a previously overlooked crystal structure of indium selenide (In₂Se₃) has been brought to life as a promising material for next-generation logic electronics.

A research team led by professor Yong-Young Noh from the Department of Chemical Engineering at POSTECH, including graduate student Jaeyun Lee, in collaboration with professor Jimin Kwon and Dr. Yongwoo Lee from the School of Electrical Engineering at KAIST, has developed wafer-scale logic transistors based on the rarely explored κ-phase In₂Se₃.

The study has been published in the journal Nature Communications.

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