Lateral bipolar transistor and CMOS hybrid technology
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United States of America Patent
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Aug 11, 2015
Grant Date -
Jun 19, 2014
app pub date -
Feb 21, 2014
filing date -
Sep 12, 2012
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Abstract
A method of forming a lateral bipolar transistor includes forming a silicon on insulator (SOI) substrate having a bottom substrate layer, a buried oxide layer (BOX) on top of the substrate layer, and a silicon on insulator (SOI) layer on top of the BOX layer, forming a dummy gate and spacer on top of the silicon on insulator layer, doping the SOI layer with positive or negative ions, depositing an inter layer dielectric (ILD), using chemical mechanical planarization (CMP) to planarize the ILD, removing the dummy gate creating a gate trench which reveals the base of the dummy gate, doping the dummy gate base, depositing a layer of polysilicon on top of the SOI layer and into the gate trench, etching the layer of polysilicon so that it only covers the dummy gate base, and applying a self-aligned silicide process.
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