Study of the Density of Interface States at the Insulator/In0.52Al0.48As Interface

A. P. Kovchavtsev, M. S. Aksenov, A. E. Nastov’yak, N. A. Valisheva, D. V. Gorshkov, G. Yu Sidorov, D. V. Dmitriev

Результат исследования: Научные публикации в периодических изданияхстатья

Аннотация

The C–V characteristics of Au/Al2O3/In0.52Al0.48As and Au/SiO2/In0.52Al0.48As metal–insulator–semiconductor structures have been studied. It has been established that the fragmentary measurement of the C–V characteristics of InAlAs-based metal–insulator–semiconductor structures, in contrast standard registration method to at a constant voltage sweep rate, significantly weakens the effect of the hysteresis phenomena and allows one to record stationary curves. It is shown that the density of fast interface states calculated by the Terman method from such C–V characteristics slightly changes over the InAlAs band gap and amounts to (3–6) × 1011 and (1–3) × 1011 eV–1 cm–2 for MIS structures with Al2O3 and SiO2, respectively.

Язык оригиналаанглийский
Страницы (с-по)469-472
Число страниц4
ЖурналTechnical Physics Letters
Том46
Номер выпуска5
DOI
СостояниеОпубликовано - 1 мая 2020

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