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High-gain SOI polysilicon emitter transistors

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2 Author(s)
Purbo, O.W. ; Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada ; Selvakumar, C.R.

The authors report the first high-gain polysilicon emitter bipolar transistors fabricated on zone-melting-recrystallized (ZMR) silicon-on-insulator (SOI) material. Current gains as high as 230 were obtained. Polysilicon emitter bipolar transistors made on bulk silicon wafers with identical and simultaneous heat treatments show significant differences in emitter resistance and DC characteristics as compared with SOI bipolar transistors. Post-metal anneal improves the current gain and base current ideality at low base-emitter voltages for both types of wafers.<>

Published in:

Electron Device Letters, IEEE  (Volume:12 ,  Issue: 11 )

Date of Publication:

Nov. 1991

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