Formation of Ga<sub>2</sub>O<sub>3</sub> and NiO Thin Films at Low Process Temperatures for PN Heterojunction Diodes
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Bibliographic record
Abstract
A heterojunction consisting of n-type Ga 2 O 3 and p-type NiO thin films is fabricated at low process temperatures. This technology offers the potential to improve heterojunction applications with wide bandgap semiconductors on various substrates. Optical bandgap values of 4.67 and 3.62 eV are obtained for the Ga 2 O 3 and NiO semiconductors, respectively, from a Tauc plot. The spontaneously formed depletion region in the heterojunction has capacitive characteristics under thermal equilibrium conditions, while the resistive component is involved in the charge transport under the turn-on voltage ranges. The maximum electric field at the heterojunction interface with 50 nm thick n-Ga 2 O 3 is five times higher than that of the n-Ga 2 O 3 with a thickness of over 400 nm under thermal equilibrium conditions. When the junction thickness becomes shorter than the junction depletion width, the diode suffers from an early breakdown due to the much higher maximum electric field at the PN junction interface.
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| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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