Atomic-scale defects and subgap formation in single-crystal IGZO (InGaZnO4) (IMAGE)

Tokyo University of Science

Atomic-scale defects and subgap formation in single-crystal IGZO (InGaZnO4)

Caption

Using hard X-ray photoemission spectroscopy, researchers revealed how oxygen vacancies and structural disorder influence subgap state formation. The figure shows the InGaZnO4 crystal structure, the reduction of oxygen vacancies after annealing, and the presence of subgap states near the conduction band in the as-grown sample.

Credit

Prof. Tomohiko Saitoh from Tokyo University of Science, Japan

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License

CC BY-NC

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