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See detailSelectively Grown Vertical Si p-MOS Transistor with Reduced Overlap Capacitances
Klaes, D.; Moers, J.; Tönnesmann, A. et al

in Proceedings of the 28th European Solid State Devices Research Conference, Bordeaux, France (1998)

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See detailSelectively Grown Vertical Si MOS Transistor with Reduced Overlap Capacitances
Klaes, D.; Moers, J.; Tönnesmann, A. et al

in Thin Solid Films (1998), 336(1998), 306-308

Vertical p-MOS transistors with channel length of 130 nm have been fabricated using selective epitaxial growth (SEG) to define the channel region. The vertical layout offers the advantages of achieving ... [more ▼]

Vertical p-MOS transistors with channel length of 130 nm have been fabricated using selective epitaxial growth (SEG) to define the channel region. The vertical layout offers the advantages of achieving short channel lengths and high integration densities while still using optical lithography to define lateral dimensions. Compared to other vertical concepts, this layout has reduced gate to source/drain overlap capacitances which is necessary for high speed applications. The use of SEG instead of blanket epitaxy avoids the deterioration of the Si/SiO2 interface due to reactive ion etching (RIE) and reduces punch-through due to facet growth. First non-optimized p-channel MOSFETs with a 12-nm gate oxide show a transconductance of 90 mS/mm. The cut-off frequencies of this device turned out to be f T = 2.3 GHz and f max = 1.1 GHz. [less ▲]

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