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Reduced Contact Resistance in GaN Using Selective Area Si Ion Implantation.
- Source :
- IEEE Transactions on Semiconductor Manufacturing; Nov2019, Vol. 32 Issue 4, p478-482, 5p
- Publication Year :
- 2019
-
Abstract
- We report selective area n-type doping using ion implantation of Si into semi-insulating, C-doped GaN samples activated using both conventional rapid thermal annealing (RTA) and 30 atm N2 overpressure annealing. Implanted regions were tested for Si activation using Circular Transmission Line Measurements (CTLM), while linear and circular photoconductive switches (PCSS) in the unimplanted regions were used as a test vehicle to separate implanted Si dopant activation from leakage paths generated by N vacancy formation due to damage and decomposition during annealing. We observed that at an optimal temperature around 1060 °C, a low contact resistivity of $1\times 10^{-6}\,\,\Omega $ -cm2 was obtained while preserving the breakdown of the unimplanted regions. [ABSTRACT FROM AUTHOR]
- Subjects :
- ION implantation
RAPID thermal processing
ELECTRIC lines
Subjects
Details
- Language :
- English
- ISSN :
- 08946507
- Volume :
- 32
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Semiconductor Manufacturing
- Publication Type :
- Academic Journal
- Accession number :
- 139499761
- Full Text :
- https://doi.org/10.1109/TSM.2019.2932272