학술논문

Innovative through-Si 3D lithography for ultimate self-aligned planar Double-Gate and Gate-All-Around nanowire transistors
Document Type
Conference
Source
2013 Symposium on VLSI Technology VLSI Technology (VLSIT), 2013 Symposium on. :T226-T227 Jun, 2013
Subject
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Silicon
Logic gates
Silicon germanium
Performance evaluation
Very large scale integration
Silicon compounds
Lithography
Language
ISSN
0743-1562
2158-9682
Abstract
This paper reports the first electrical results of self-aligned multigate devices based on an innovative 3D-lithography process. HSQ resist exposition through the Silicon channel allows the formation of self-aligned trenches in a single step. Planar Double-Gate (DG) and Gate-All-Around Silicon Nanowire (GAA Si NW) transistors are fabricated with conformal SiO 2 /Poly-Si:P gate stack and the first electrical results obtained with this technique are presented. The good nMOS performances (I ON =1mA/µm at V G =V T +0.7V) with excellent electrostatics (SS down to 62mV/dec and DIBL below 10mV/V at L G =80nm) are paving the way to the ultimate CMOS architecture. To meet all requirements of low-power SoCs, we also demonstrate the feasibility of fabricating such devices with High-K Metal-Gate (HK-MG) stack and their possible co-integration with FDSOI structures.