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Investigation of InGaP/GaAs double heterostructure-emitter bipolar transistor with multiple negative-differential-resistance switches

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4 Author(s)
Jung-Hui Tsai ; Dept. of Phys., Nat. Kaohsiung Normal Univ., Taiwan ; Yu-Jui Chu ; Jeng-Shyan Chen ; King-Poul Zhu

A functional InGaP/GaAs double heterostructure-emitter bipolar transistor is fabricated and demonstrated. Due to the large valence band discontinuity to conduction band discontinuity ratio at the InGaP/GaAs heterojunction and the symmetrical structure, excellent transistor performance, with a high current gain of 195 and a low collector-emitter (C-E) offset voltage of 60 mV, is achieved. In particular, attributed to the avalanche multiplication and confinement effect for electrons at the InGaP/GaAs heterojunction, interesting multiple S-shaped negative-differential-resistance switches are observed under large C-E forward voltage.

Published in:

Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on  (Volume:3 )

Date of Conference:

18-21 Oct. 2004