| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5468174 | Vacuum | 2017 | 6 Pages |
Abstract
We report on the determination of band offsets in rf-sputtered Aluminum Zinc Oxide (AZO)/single crystal β-Ga2O3 (AZO/Ga2O3) heterostructures using X-Ray Photoelectron Spectroscopy. The bandgaps of the materials were determined by Reflection Electron Energy Loss Spectroscopy as 4.6 eV for Ga2O3 and 3.2eV for AZO. The valence band offset was determined to be â0.61eV ± 0.23eV, while the conduction band offset was determined to be â0.79 ± 0.34 eV. The AZO/Ga2O3 system has a nested, or straddling, gap (type I) alignment and provides a convenient method for reducing contact resistance on Ga2O3-based device structures.
Related Topics
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Materials Science
Surfaces, Coatings and Films
Authors
Patrick H. IV, F. Ren, David C. Hays, B.P. Gila, S.J. Pearton, Soohwan Jang, Akito Kuramata,