Aluminum gallium nitride short-period superlattices doped with magnesium
- 1 April 1999
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 74 (14) , 2023-2025
- https://doi.org/10.1063/1.123744
Abstract
Short-period superlattices consisting of alternating layers of GaN:Mg and AlGaN:Mg were grown by low-pressure organometallic vapor phase epitaxy. The electrical properties of these superlattices were measured as a function of temperature and compared to conventional AlGaN:Mg layers. It is shown that the optical absorption edge can be shifted to shorter wavelengths while lowering the acceptor ionization energy by using short-period superlattice structures instead of bulk-like AlGaN:Mg.Keywords
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