Abstract
Dynamic SIMS has been applied to investigate the influence of impurity profiles on the characteristics of ultra-shallow GaAs sidewall tunnel junctions. SIMS depth profile on test-element-group areas on the device chips have shown that the Be profiles pile-up, with concentrations of up to 10 20 cm -3 at the tunnel junction interfaces. This result illustrates one of the dominant causes why very high peak current densities are achieved.
Original language | English |
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Pages (from-to) | 7283-7285 |
Number of pages | 3 |
Journal | Applied Surface Science |
Volume | 252 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2006 Jul 30 |
Keywords
- Dynamic SIMS
- Epitaxial growth
- GaAs
- Impurity doping
- Semiconductor
- Tunnel junction
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films