Selective atomic-level etching using two heating procedures, infrared irradiation and ion bombardment, for next-generation semiconductor device manufacturing

K Shinoda, N Miyoshi, H Kobayashi… - Journal of Physics D …, 2017 - iopscience.iop.org
The demand for precisely controlled etching is increasing as semiconductor device
geometries continue to shrink. To fulfill this demand, cyclic atomic level/layer etching will …

[HTML][HTML] Fluorocarbon based atomic layer etching of Si3N4 and etching selectivity of SiO2 over Si3N4

C Li, D Metzler, CS Lai, EA Hudson… - Journal of Vacuum …, 2016 - pubs.aip.org
Angstrom-level plasma etching precision is required for semiconductor manufacturing of sub-
10 nm critical dimension features. Atomic layer etching (ALE), achieved by a series of self …

Etch selectivity during plasma-assisted etching of SiO2 and SiNx: Transitioning from reactive ion etching to atomic layer etching

RJ Gasvoda, Z Zhang, S Wang, EA Hudson… - Journal of Vacuum …, 2020 - pubs.aip.org
Continued downscaling of semiconductor devices has placed stringent constraints on all
aspects of the fabrication process including plasma-assisted anisotropic etching. To address …

Atomic layer etching of Si3N4 with high selectivity to SiO2 and poly-Si

N Miyoshi, K Shinoda, H Kobayashi… - Journal of Vacuum …, 2021 - pubs.aip.org
Atomic layer etching (ALE) is usually classified into ion-driven anisotropic etching or
thermally driven isotropic etching. In this work, we present a thermal ALE process for Si 3 N …

[HTML][HTML] Fluorocarbon assisted atomic layer etching of SiO2 and Si using cyclic Ar/C4F8 and Ar/CHF3 plasma

D Metzler, C Li, S Engelmann, RL Bruce… - Journal of Vacuum …, 2016 - pubs.aip.org
The need for atomic layer etching (ALE) is steadily increasing as smaller critical dimensions
and pitches are required in device patterning. A flux-control based cyclic Ar/C 4 F 8 ALE …

[HTML][HTML] Characterizing fluorocarbon assisted atomic layer etching of Si using cyclic Ar/C4F8 and Ar/CHF3 plasma

D Metzler, C Li, S Engelmann, RL Bruce… - The Journal of …, 2017 - pubs.aip.org
With the increasing interest in establishing directional etching methods capable of atomic
scale resolution for fabricating highly scaled electronic devices, the need for development …

[HTML][HTML] Atomic layer etching of metals with anisotropy, specificity, and selectivity

X Sang, Y Xia, P Sautet, JP Chang - Journal of Vacuum Science & …, 2020 - pubs.aip.org
In this work, a special focus is given to atomic layer etching (ALE) of metals, since this is a
relatively new field but is expected to grow rapidly given the major advancements potentially …

Quasiatomic layer etching of silicon nitride enhanced by low temperature

DN Shanks, RK Ahmed, JD Femi-Oyetoro… - Journal of Vacuum …, 2023 - pubs.aip.org
Plasma atomic layer etching is a dry etching process using a dose step to modify a material's
surface chemistry and an etch step to remove the modified surface layer. This method of …

Quasiatomic layer etching of silicon oxide selective to silicon nitride in topographic structures using fluorocarbon plasmas

M Wang, PLG Ventzek, A Ranjan - … of Vacuum Science & Technology A, 2017 - pubs.aip.org
The precision etch of dielectric materials (SiO 2, Si 3 N 4) in self-aligned contacts and self-
aligned multiple patterning at the 10 nm technology node and beyond is required to …

Quasi-atomic layer etching of silicon nitride

SD Sherpa, A Ranjan - Journal of Vacuum Science & Technology A, 2017 - pubs.aip.org
Atomic layer etching (ALE) is a promising technique that can solve the challenges
associated with continuous or pulsed plasma processes—trade-offs between selectivity …