Sub-10 nm plasma nanopatterning of InGaAs with nearly vertical and smooth sidewalls for advanced n-fin field effect transistors on silicon - Université Grenoble Alpes Accéder directement au contenu
Article Dans Une Revue Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics Année : 2017

Sub-10 nm plasma nanopatterning of InGaAs with nearly vertical and smooth sidewalls for advanced n-fin field effect transistors on silicon

Résumé

This work focuses on the nanopatterning of sub-10 nm InGaAs fins by inductively coupled plasma reactive ion etching for advanced III−V n-fin field effect transistors (n-FinFETs) on silicon. First, different chlorine chemistries have been investigated and compared in order to select the most adequate one for the FinFETs process. Following this analysis, the BCl3/SiCl4/Ar mixture was selected for the remaining of the work. Thus, a systematic study of the etching process based on this chemistry has been carried out, and the effects of the experimental conditions on the etching kinetics and the sidewalls quality have been revealed. The optimized results depict 8 nm width fins with smooth (line edge roughness ≈2 nm) and almost vertical (85° ± 1) sidewalls, opening the way for sub-10 nm width InGaAs FinFETs on silicon.
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Dates et versions

hal-01891230 , version 1 (28-09-2022)

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Fares Chouchane, Bassem Salem, Guillaume Gay, Mickaël Martin, Erwine Pargon, et al.. Sub-10 nm plasma nanopatterning of InGaAs with nearly vertical and smooth sidewalls for advanced n-fin field effect transistors on silicon. Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics, 2017, 35 (2), ⟨10.1116/1.4975796⟩. ⟨hal-01891230⟩
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