High-Speed InGaAs/InP Double Heterostructure Bipolar Transistor with High Breakdown Voltage
2008 Chinese Phys. Lett. 25 2683-2685
Authors:Jin Zhi, Su Yong-Bo, Cheng Wei, Liu Xin-Yu,Xu An-Huai and Qi Ming
Abstract.
We design and fabricate an InGaAs/InP double heterostructure bipolar transistor (DHBT). The spike of the conduction band
discontinuity between InGaAs base and InP collector is successfully eliminated by insertion of an InGaAs layer and two InGaAsP
layers. The current gain cutoff frequency and maximum oscillation frequency are as high as 155 and 144 GHz. The breakdown
voltage in common-emitter configuration is more than 7 V. The high cutoff frequency and high breakdown voltage make high-speed
and high-power circuits possible.
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