Summary
We demonstrate III–V compound semiconductor (GaAs, InGaAs, and GaN) based metal-oxide-semiconductor field-effect transistors (MOSFETs) with excellent performance using an Al2O3 high-permittivity (high-κ) gate dielectric, deposited by atomic layer deposition (ALD). These MOSFET devices exhibit extremely low gate-leakage current, high transconductance, high dielectric breakdown strength, a high short-circuit current-gain cut-off frequency (f T) and maximum oscillation frequency (f MAX), as well as high output power and power added efficiency. ALD is a robust process that enables repeatability and manufacturability for compound semiconductor MOSFETs. In order to contribute to the fundamental understanding of ALD-grown high-κ/III–V gate stack quality, we discuss stack and interface formation mechanisms in detail for Al2O3 and HfO2 gate dielectrics on GaAs.
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Ye, P.D., Wilk, G.D., Frank, M.M. (2007). Processing and Characterization of III–V Compound Semiconductor MOSFETs Using Atomic Layer Deposited Gate Dielectrics. In: Dimoulas, A., Gusev, E., McIntyre, P.C., Heyns, M. (eds) Advanced Gate Stacks for High-Mobility Semiconductors. Advanced Microelectronics, vol 27. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-71491-0_16
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DOI: https://doi.org/10.1007/978-3-540-71491-0_16
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