Epitaxial growth of nitride-based semiconductors via magnetron sputtering
Purdue University presents a cost-effective and scalable method for epitaxial growth of AlN and GaN semiconductors using magnetron sputtering. This approach offers advantages over traditional techniques like MBE and MOCVD, with potential applications in electronics and optoelectronics.
Overview
Purdue University introduces a novel approach for the epitaxial growth of nitride-based semiconductors, specifically aluminum nitride (AlN) and gallium nitride (GaN), using magnetron sputtering. This cost-effective and scalable technique offers significant advantages over traditional methods such as Molecular Beam Epitaxy (MBE) and Metal-Organic Chemical Vapor Deposition (MOCVD), including easier operation and the ability to fine-tune a variety of deposition parameters to achieve optimal results. The proposed method holds potential applications in electronics, optoelectronics, and other fields requiring high-quality nitride films.
Technical specifications
Key features:
- Utilizes magnetron sputtering with reactive sputtering of pure Al targets and AlN targets for AlN growth
- Employs GaN targets for the epitaxial growth of GaN
- Allows for adjustment of critical parameters such as Ar/N2 mixture ratio, substrate temperature, and substrate type
- Incorporates buffer layers to enhance film quality
- Leverages 20 years of expertise in sputtering and collaboration with industry partners for advanced power supply technologies
Technology readiness level
The current technology readiness level is 3, indicating the experimental proof of concept stage. The research plan outlines a detailed timeline, including the procurement of sputtering targets, exploration of deposition parameters, and characterization of the deposited films over the first year, aiming to identify optimum conditions for high-quality nitride films.
About Purdue University
Purdue University is a comprehensive public land‑grant research institution in West Lafayette, Indiana, anchored by a large residential campus. Industry engages through co‑located core facilities, pilot‑scale testbeds, and an adjacent innovation district that brings together labs, corporate R&D space, and maker resources near faculty talent. A statewide Extension network and an established engineering co‑op program connect companies to field sites, workforce pipelines, and pragmatic pathways from concept to deployment across Indiana. Research is supported by competitive federal funding from NSF, DOE, USDA, NIH, and the Department of Defense, and commercialization is managed by a dedicated technology transfer office in partnership with the university’s affiliated research foundation.
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