Cryogenic etching of silicon compounds using a CHF3 based plasma

R Dussart, R Ettouri, J Nos, G Antoun… - Journal of Applied …, 2023 - pubs.aip.org
Cryogenic etching of a-Si, SiO 2, and Si 3 N 4 materials by CHF 3/Ar inductively coupled
plasma is investigated in a range of temperature from− 140 to+ 20 C. Samples of the three …

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 …

Cryogenic nanoscale etching of silicon nitride selectively to silicon by alternating SiF4/O2 and Ar plasmas

G Antoun, T Tillocher, A Girard, P Lefaucheux… - Journal of Vacuum …, 2022 - pubs.aip.org
This article first presents quasi-in situ XPS measurements on Si 3 N 4 and a-Si samples after
exposure to an SiF 4/O 2 plasma at different cryogenic temperatures. A different behavior is …

Increased selectivity in area-selective ALD by combining nucleation enhancement and SAM-based inhibition

C de Paula, D Bobb-Semple, SF Bent - Journal of Materials Research, 2021 - Springer
An area-selective atomic layer deposition (AS-ALD) process is developed that achieves
increased selectivity by combining two strategies: i) selective enhancement using a small …

Applications and mechanisms of anisotropic two-step Si3N4 etching with hydrogen plasma conditioning

Y Rui, MH Chen, S Pandey, L Li - … of Vacuum Science & Technology A, 2023 - pubs.aip.org
The ability to precisely form Si 3 N 4 spacers is critical to the success of dynamic random-
access memory and NAND (NOT AND) flash memory technology development. In this study …

Reaction Mechanism and Selectivity Control of Si Compound ALE Based on Plasma Modification and F-Radical Exposure

RHJ Vervuurt, B Mukherjee, K Nakane, T Tsutsumi… - Langmuir, 2021 - ACS Publications
In this work, atomic layer etching (ALE) of Si compounds using H2 or N2 plasma
modification followed by fluorine radical exposure is discussed. It is shown that the H2 …

Key chemical reaction pathways in a helium-nitrogen atmospheric glow discharge plasma based on a global model coupled with the genetic algorithm and dynamic …

J Li, C Fang, J Chen, HP Li, T Makabe - Journal of Applied Physics, 2021 - pubs.aip.org
Determination of the key chemical reaction pathways in cold atmospheric plasmas (CAPs) is
of great importance not only for understanding the spatiotemporal evolutions of the key …

Importance of higher‐level excited species in argon remote plasma sources: Numerical modeling with consideration of detailed chemical reaction pathways

C Cheon, JH Yoon, S Jo, HJ Kim… - Plasma Processes and …, 2022 - Wiley Online Library
Stable plasma ignition of remote plasma sources (RPSs) for various plasma processes is
essential to ensure the stability of the discharge, steady operating conditions, and high …

[HTML][HTML] Anisotropic and low damage III-V/Ge heterostructure etching for multijunction solar cell fabrication with passivated sidewalls

M de Lafontaine, E Pargon, G Gay… - Micro and Nano …, 2021 - Elsevier
This article presents a complete plasma etching process to etch high aspect ratio patterns on
III-V/Ge solar cell heterostructure with low damage for the fabrication of multijunction solar …

Mechanism study of H2-plasma assisted Si3N4 layered etch

Y Rui, S Pandey, C Hsie, L Li - … of Vacuum Science & Technology A, 2024 - pubs.aip.org
The cyclic two-step process, comprised of energetic H 2 plasma followed by HF wet clean or
in situ NF 3 plasma, demonstrates Si 3 N 4 layer-by-layer removal capability exceeding 10 …