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- W2538668925 abstract "We report low-resistance Si-doped polycrystalline InAs (poly-InAs:Si) using molecular beam deposition. We believe this to be the first report of low resistance in poly-InAs. The poly-InAs:Si was deposited using conventional molecular beam epitaxy (MBE) onto SiN/sub x/ coated GaAs substrates at various growth temperatures and deposition rates. Poly-InAs samples with thicknesses of 2000 /spl Aring/ and 1000 /spl Aring/ were grown for Hall and TLM measurements, respectively. We have observed electron concentrations from 8.8/spl times/10/sup 18/ to 1.5/spl times/10/sup 19/ cm/sup -3/ and respective mobilities from 886 to 441 cm/sup 2//Vs. This range of values suggests that the poly-InAs:Si has a doping-mobility product, and hence bulk conductivity, that is only 3-4 times lower than that of similarly doped InGaAs lattice-matched to InP. The typical bulk resistivity determined by TLM measurements is approximately 1.4/spl times/10/sup -3/ /spl Omega/-cm. Contact resistance to the poly-InAs with a Ti/Pt/Au metal stack less than 1.6/spl times/10/sup -7/ /spl Omega/-cm/sup 2/. The combined low contact access resistance and low junction capacitance found in poly-InAs:Si may be useful in a variety of III-V device applications." @default.
- W2538668925 created "2016-10-28" @default.
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- W2538668925 date "2003-06-26" @default.
- W2538668925 modified "2023-09-25" @default.
- W2538668925 title "Molecular beam deposition of low-resistance polycrystalline InAs" @default.
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- W2538668925 doi "https://doi.org/10.1109/lechpd.2002.1146752" @default.
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