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Selective Growth of GaAs and A1xGa1−xas by Omvpe Using Tertiarybutylarsine
Published online by Cambridge University Press: 25 February 2011
Abstract
We have investigated the use of tertiarybutylarsine (TBAs) to selectively grow GaAs and AlxGa1−x As in trenches on partially-masked GaAs substrates. Both SiyNz and Si02 masks have been used, with geometries ranging from 4 - 160 μm. By varying temperature and pressure, we have optimized selectivity and minimized “ridge” growth near masked areas. The results show TBAs may be a suitable alternative to arsine for selective regrowth of these materials.
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- Copyright © Materials Research Society 1991