SMI Wins SBIR Award to Evaluate Bandgap Tunability of Gallium Oxide

Structured Materials Industries, Inc., (SMI) of Piscataway, New Jersey USA announced that it received a Department of Energy (DOE) Small Business Innovation Research (SBIR) award. The award is for a submitted research proposal to evaluate the energy bandgap tunability of Gallium Oxide (Ga2O3) by alloying the material with Aluminum Oxide (Al2O3) and Indium Oxide (In2O3).

The continuing work is in collaboration with Prof. Lisa Porter and Prof. Robert Davis of Carnegie Mellon University (CMU). Increasing the selectivity of the sensors for UVA, UVB, and UVC bands, which is the project’s focus, requires an assessment of the Ga2O3 energy bandgap tunability. The researchers will grow the materials with Metal-organic Chemical Vapor Deposition (MOCVD).

Structured Materials Industries, Inc (SMI) specializes in developing and implementing custom research and production of Metal Organic Chemical Vapor Deposition (MOCVD) and Chemical Vapor Deposition Tool and Process Technology.

SMI Research Scientist and leader of Ga2O3 efforts, Dr. Serdal Okur, said, “We believe that In2O3 and Al2O3 are good candidates to realize the bandgap engineering of Ga2O3. Additionally, we decided to use the MOCVD technique as it offers many advantages for ultimate device fabrication, including high growth rates, conformal deposition over device topography, and the capability for scale-up to high volume production.”

“In our current DOE project, SMI will demonstrate Gallium Oxide (Go), Aluminum Gallium Oxide (AlGO), and Indium Gallium Oxide (InGO) based UV sensors that cover the whole UV spectrum. In particular, these devices will be very important to detect UV photons from liquid Ar and Xe scintillators, both at 128 and 175 nm, respectively, in particle physics experiments,” commented Dr. Okur.

He added, “The company, in collaboration with CMU, will continue to explore the potential of large-area Ga2O3 based alloys with the intention of making the aforementioned sensors more economical and readily available than competing materials in UV sensing applications.”