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- W2095661714 abstract "Zinc and carbon-doped InP/InGaAs heterojunction bipolar transistors (HBTs) with the same design were grown by metalorganic chemical vapor deposition (MOCVD). DC current gain values of 36 and 16 were measured for zinc and carbon-doped HBTs, respectively, and carrier lifetimes were measured by time-resolved photoluminescence to explain the difference. Transmission line model (TLM) analysis of carbon-doped base layers showed excellent sheet-resistance (828 /spl Omega///spl square/ for 600 A base), indicating successful growth of highly carbon-doped base (2/spl times/10/sup 19/ cm/sup -3/). The reasons for larger contact resistance of carbon than zinc-doped base despite its low sheet resistance were analyzed. f/sub T/ and f/sub max/ of 72 and 109 GHz were measured for zinc-doped HBTs, while 70-GHz f/sub T/ and 102 GHz f/sub max/ were measured for carbon-doped devices. While the best performance was similar for the two HBTs, the associated biasing current densities were much different between zinc (4.0/spl times/10/sup 4/ A/cm/sup 2/) and carbon-doped HBTs (2.0/spl times/10/sup 5/ A/cm/sup 2/). The bias-dependant high-frequency performance of the HBTs was measured and analyzed to explain the discrepancy." @default.
- W2095661714 created "2016-06-24" @default.
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- W2095661714 date "2002-05-01" @default.
- W2095661714 modified "2023-09-24" @default.
- W2095661714 title "Comparison of DC and high-frequency performance of zinc-doped and carbon-doped InP/InGaAs HBTs grown by metalorganic chemical vapor deposition" @default.
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- W2095661714 doi "https://doi.org/10.1109/16.998577" @default.
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