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- Title
Study of the Density of Interface States at the Insulator/In0.52Al0.48As Interface.
- Authors
Kovchavtsev, A. P.; Aksenov, M. S.; Nastov'yak, A. E.; Valisheva, N. A.; Gorshkov, D. V.; Sidorov, G. Yu.; Dmitriev, D. V.
- Abstract
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.
- Subjects
DENSITY of states; BAND gaps
- Publication
Technical Physics Letters, 2020, Vol 46, Issue 5, p469
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S1063785020050259