Pulse–time‐modulated electron cyclotron resonance plasma discharge for highly selective, highly anisotropic, and charge‐free etching
S Samukawa, H Ohtake, T Mieno - … of Vacuum Science & Technology A …, 1996 - pubs.aip.org
Highly selective, highly anisotropic, notch‐free, and charge‐buildup damage‐free silicon
etching is performed using electron cyclotron resonance (ECR) Cl 2 plasma modulated at a …
etching is performed using electron cyclotron resonance (ECR) Cl 2 plasma modulated at a …
Charge‐free etching process using positive and negative ions in pulse‐time modulated electron cyclotron resonance plasma with low‐frequency bias
H Ohtake, S Samukawa - Applied physics letters, 1996 - pubs.aip.org
Charge build‐up on a substrate is greatly reduced by using a pulse‐time modulated electron
cyclotron resonance generated plasma of more than 50 μs with 600 kHz radio frequency (…
cyclotron resonance generated plasma of more than 50 μs with 600 kHz radio frequency (…
SiN etching characteristics of Ar/CH3F/O2 plasma and dependence on SiN film density
H Ohtake, T Wanifuchi, M Sasaki - Japanese Journal of Applied …, 2016 - iopscience.iop.org
We evaluated the silicon nitride (SiN) etching characteristics of Ar/O 2/hydrofluorocarbon
plasma. Ar/CH 3 F/O 2 plasma achieved a high etching selectivity of SiN to SiO 2 by increasing …
plasma. Ar/CH 3 F/O 2 plasma achieved a high etching selectivity of SiN to SiO 2 by increasing …
Prediction of UV spectra and UV-radiation damage in actual plasma etching processes using on-wafer monitoring technique
B Jinnai, S Fukuda, H Ohtake… - Journal of Applied Physics, 2010 - pubs.aip.org
UV radiation during plasma processing affects the surface of materials. Nevertheless, the
interaction of UV photons with surface is not clearly understood because of the difficulty in …
interaction of UV photons with surface is not clearly understood because of the difficulty in …
Characterization of CO2 plasma ashing for less low-dielectric-constant film damage
Y Susa, H Ohtake, Z Jianping, L Chen… - Journal of Vacuum …, 2015 - pubs.aip.org
The mechanism of CO 2 plasma ashing process was evaluated. CO 2 plasma is a good
candidate for the ashing process for photoresists because it generates a lot of CO 2 ions. These …
candidate for the ashing process for photoresists because it generates a lot of CO 2 ions. These …
Two-dimensional self-consistent simulation of a DC magnetron discharge
E Shidoji, H Ohtake, N Nakano… - Japanese journal of …, 1999 - iopscience.iop.org
A two-dimensional simulation of dc magnetron discharge is performed by a hybrid of fluid and
particle models. In this hybrid model, ions and bulk electrons are treated by the fluid model …
particle models. In this hybrid model, ions and bulk electrons are treated by the fluid model …
Feasibility study of 45-nm-node scaled-down Cu interconnects with molecular-pore-stacking (MPS) SiOCH films
A feasibility study was done for 45-nm-node Cu interconnects using a novel molecular-pore-stacking
(MPS) SiOCH film (k = 2.45), taking electron scattering in the scaled-down Cu lines …
(MPS) SiOCH film (k = 2.45), taking electron scattering in the scaled-down Cu lines …
Photochemically stabilized formulation of dacarbazine with reduced production of algogenic photodegradants
A Uchida, H Ohtake, Y Suzuki, H Sato, Y Seto… - International Journal of …, 2019 - Elsevier
The present study aimed to develop a photochemically stabilized formulation of dacarbazine
[5-(3,3-dimethyl-1-triazeno)imidazole-4-carboxamide; DTIC] for reducing the production of …
[5-(3,3-dimethyl-1-triazeno)imidazole-4-carboxamide; DTIC] for reducing the production of …
Robust Cu dual damascene interconnects with porous SiOCH films fabricated by low-damage multi-hard-mask etching technology
H Ohtake, M Tagami, M Tada, M Ueki… - IEEE transactions on …, 2006 - ieeexplore.ieee.org
Low-damage hard-mask (HM) plasma-etching technology for porous SiOCH film (k=2.6)
has been developed for robust 65-nm-node Cu dual damascene interconnects (DDIs). No …
has been developed for robust 65-nm-node Cu dual damascene interconnects (DDIs). No …
Low-damage low-k etching with an environmentally friendly CF3I plasma
…, S Saito, Y Ichihashi, A Sato, H Ohtake… - Journal of Vacuum …, 2008 - pubs.aip.org
The feasibility of etching Cu/low-k interconnects by using a low global warming potential CF
3 I plasma was studied. Low-damage etching was done and porous SiOC ( p-Si OC, k< …
3 I plasma was studied. Low-damage etching was done and porous SiOC ( p-Si OC, k< …