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- W2911603280 abstract "This letter presents the current-gain and high-frequency characteristics of double heterojunction bipolar transistors (DHBTs) consisting of an n-InGaP emitter, a p-GaAsSb/p-InGaAsSb base, and an n-InP collector. The impact of the thickness of the first base metal (Pt) on the base contact resistivity is investigated in a p-GaAsSb/p-InGaAsSb test structure for the purpose of improving fmax. A low base contact resistivity (4.8 Ωµm2) is obtained when the Pt layer is thinner than the p-GaAsSb layer. A fabricated InGaP/GaAsSb/InGaAsSb DHBT with a 0.25-µm emitter exhibits a high current gain of 33 even though the base sheet resistance is as low as 1025 Ω/sq. The DHBT also exhibits an fmax of 703 GHz and a breakdown voltage of 5.4 V. These results demonstrate that this DHBT technology is useful for fabricating high-speed integrated circuits with high output voltages." @default.
- W2911603280 created "2019-02-21" @default.
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- W2911603280 date "2019-01-01" @default.
- W2911603280 modified "2023-09-26" @default.
- W2911603280 title "InGaP/GaAsSb/InGaAsSb double heterojunction bipolar transistors with 703-GHz <i>f</i><sub>max</sub> and 5.4-V breakdown voltage" @default.
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- W2911603280 doi "https://doi.org/10.1587/elex.16.20181125" @default.
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