Control of the Alumina Microstructure to Reduce Gate Leaks in Diamond MOSFETs
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-07-31 |
| Journal | Nanomaterials |
| Authors | M. GutiƩrrez, Fernando Lloret, Toan Thang Pham, J. CaƱas, D.F. Reyes |
| Institutions | Centre National de la Recherche Scientifique, Material (Belgium) |
| Citations | 8 |
Abstract
Section titled āAbstractāIn contrast to Si technology, amorphous alumina cannot act as a barrier for a carrier at diamond MOSFET gates due to their comparable bandgap. Indeed, gate leaks are generally observed in diamond/alumina gates. A control of the alumina crystallinity and its lattice matching to diamond is here demonstrated to avoid such leaks. Transmission electron microscopy analysis shows that high temperature atomic layer deposition, followed by annealing, generates monocrystalline reconstruction of the gate layer with an optimum lattice orientation with respect to the underneath diamond lattice. Despite the generation of Ī³-alumina, such lattice control is shown to prohibit the carrier transfer at interfaces and across the oxide.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
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