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Updated: Feb 12, 2026

The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors
Published on: May 24, 2020
Porous Aluminum Oxide and Magnesium Oxide Films Using Organic Hydrogels as Structure Matrices
Zimei Chen1,2, Dirk Kuckling3, Michael Tiemann4
1Department of Chemistry-Organic and Macromolecular Chemistry, Paderborn University, 33098 Paderborn, Germany. zimei.chen@uni-paderborn.de.
Abstract:
We describe the synthesis of mesoporous Al₂O₃ and MgO layers on silicon wafer substrates by using poly(dimethylacrylamide) hydrogels as porogenic matrices. Hydrogel films are prepared by spreading the polymer through spin-coating, followed by photo-cross-linking and anchoring to the substrate surface. The metal oxides are obtained by swelling the hydrogels in the respective metal nitrate solutions and subsequent thermal conversion. Combustion of the hydrogel results in mesoporous metal oxide layers with thicknesses in the μm range and high specific surface areas up to 558 m²∙g-1. Materials are characterized by SEM, FIB ablation, EDX, and Kr physisorption porosimetry.
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