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Recent Advances in Metal-Oxide-Based Photoresists for EUV Lithography
Muhammad Waleed Hasan1, Laura Deeb1, Sergei Kumaniaev1
1Department of Microsystems, University of South-Eastern Norway, 3184 Horten, Norway.
Micromachines
|September 28, 2024
Summary
Recent advancements in inorganic metal-oxide photoresists significantly enhance extreme ultraviolet lithography (EUVL) for semiconductor manufacturing. These materials offer improved resolution and potential for novel applications beyond microelectronics.
Area of Science:
- Materials Science
- Nanotechnology
- Semiconductor Manufacturing
Background:
- Extreme ultraviolet lithography (EUVL) is critical for high-resolution patterning in advanced microelectronics.
- Traditional organic photoresists face limitations in achieving desired resolution and performance.
- Inorganic metal-oxide-based photoresists present a promising alternative for next-generation semiconductor fabrication.
Purpose of the Study:
- To review recent progress in inorganic metal-oxide photoresists for EUVL applications.
- To examine the properties and potential of zinc-based, tin-oxygen, and IVB group photoresists.
- To outline future research directions for optimizing these materials.
Main Methods:
- Review of recent literature on inorganic photoresist development for EUVL.
- Analysis of zinc oxide, tin oxide nanoparticles, and tin-oxygen clusters.
- Examination of photochemical reactions, ligand effects, and material properties.
Main Results:
- Zinc oxide and tin oxide nanoparticles show improved photon absorption and solubility under EUV exposure.
- Tin-oxygen clusters exhibit unique photochemical reactions influenced by ligands, affecting film density and cross-linking.
- Inorganic photoresists demonstrate enhanced chemical reactivity and precise patterning capabilities.
Conclusions:
- Inorganic metal-oxide photoresists offer superior photolithographic performance for EUVL.
- These materials show potential for applications in pyroelectric infrared sensors and 3D printing.
- Further research into process optimization and new material combinations is warranted.
