Search Results - "Lill, Thorsten"
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Thermal atomic layer etching: A review
Published in Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films (01-05-2021)“…This article reviews the state-of-the art status of thermal atomic layer etching of various materials such as metals, metal oxides, metal nitrides,…”
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Book Review Journal Article -
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Overview of atomic layer etching in the semiconductor industry
Published in Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films (01-03-2015)“…Atomic layer etching (ALE) is a technique for removing thin layers of material using sequential reaction steps that are self-limiting. ALE has been studied in…”
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Book Review Journal Article -
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Thermal etching of AlF3 and thermal atomic layer etching of Al2O3
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-03-2020)“…Thermal etching of AlF3 with dimethyl-aluminum chloride (DMAC) and thermal isotropic atomic layer etching (ALE) of Al2O3 with alternating anhydrous hydrogen…”
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Predicting synergy in atomic layer etching
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-09-2017)“…Atomic layer etching (ALE) is a multistep process used today in manufacturing for removing ultrathin layers of material. In this article, the authors report on…”
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Directional etch of magnetic and noble metals. II. Organic chemical vapor etch
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-09-2017)“…Surface oxidation states of transition (Fe and Co) and noble (Pd and Pt) metals were tailored by controlled exposure to O2 plasmas, thereby enabling their…”
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Applying sputtering theory to directional atomic layer etching
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-01-2018)“…Plasma assisted atomic layer etching (ALE) has recently been introduced into manufacturing of 10 nm logic devices. This implementation of ALE is called…”
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Directional etch of magnetic and noble metals. I. Role of surface oxidation states
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-09-2017)“…An organic chemical etch process based on tailoring the surface oxidation state was found to be effective in realizing directional etch of magnetic and noble…”
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Ion Beam Patterning of High-Density STT-RAM Devices
Published in IEEE transactions on magnetics (01-02-2017)“…Dependence on ion beam energy, ion species, and incidence angles is investigated to reduce sidewall re-deposition on the magnetic tunnel junction barrier…”
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SiCl4/Cl2 plasmas: A new chemistry to etch high-k materials selectively to Si-based materials
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-03-2012)“…Plasma etching of ultrathin layers of high-k materials is one critical step in the fabrication of gate transistors. The main challenge in this process is to…”
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Neutral transport during etching of high aspect ratio features
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-05-2023)“…This paper studies the transport of neutral etch species in cylindrical holes, which are of interest for advanced memory devices. The etching of these devices…”
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Spontaneous Etching of Metal Fluorides Using Ligand-Exchange Reactions: Landscape Revealed by Mass Spectrometry
Published in Chemistry of materials (12-10-2021)“…Thermal atomic layer etching (ALE) can be performed using sequential reactions based on surface modification followed by volatile release of the modified…”
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Causes of anisotropy in thermal atomic layer etching of nanostructures
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-07-2020)“…In this work, the authors have investigated the dependence of the anisotropy level in an atomic layer etching (ALE) process of Al2O3 on form factor constraints…”
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Effect of surface polymerization on plasma and process stability in polycrystalline-silicon etching
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-11-2002)“…Properties of the plasma containing Cl 2 , HBr, and O 2 species used for polysilicon etching change when the chamber wall is coated with organic polymer,…”
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Surface reaction modelling of thermal atomic layer etching on blanket hafnium oxide and its application on high aspect ratio structures
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-01-2023)“…Thermal atomic layer etching is rapidly becoming an important complementary processing technology in the manufacturing of 5 and 3 nm devices in the…”
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Effectiveness of Different Ligands on Silane Precursors for Ligand Exchange to Etch Metal Fluorides
Published in Chemistry of materials (11-10-2022)“…Metal fluorides can be spontaneously etched by ligand-exchange reactions. During these reactions, the exchange of ligands between the incoming precursor and…”
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Control of etch profiles in high aspect ratio holes via precise reactant dosing in thermal atomic layer etching
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-03-2022)“…Thermal atomic layer etching (ALE) was studied in HfO2-based 3D NAND test structures with an aspect ratio of more than 50:1. Etching was performed via ligand…”
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Thermal Atomic Layer Etching of CoO, ZnO, Fe2O3, and NiO by Chlorination and Ligand Addition Using SO2Cl2 and Tetramethylethylenediamine
Published in Chemistry of materials (14-03-2023)“…Thermal atomic layer etching (ALE) of CoO, ZnO, Fe2O3, and NiO was achieved using chlorination and ligand-addition reactions at 250 °C. This two-step process…”
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Wall-dependent etching characteristics of organic antireflection coating in O2+halogen/hydrogen halide plasma
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-11-2001)“…Process instability in plasma etching of organic bottom-antireflection coating (BARC) using the plasma of O2 mixed with halogen (Cl2) or hydrogen halide (HBr,…”
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Dry etching in the presence of physisorption of neutrals at lower temperatures
Published in Journal of vacuum science & technology. A, Vacuum, surfaces, and films (01-03-2023)“…In this article, we give an overview about the chemical and physical processes that play a role in etching at lower wafer temperatures. Conventionally, plasma…”
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