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Codoping of magnesium with oxygen in gallium nitride nanowires

Author:
Z. Wang   J. Li   F. Gao   W. J. Weber  


Journal:
Applied Physics Letters


Issue Date:
2010


Abstract(summary):

Codoping of p-type GaN nanowires with Mg and oxygen was investigated using first-principles calculations. The Mg becomes a deep acceptor in GaN nanowires with high ionization energy due to the quantum confinement. The ionization energy of Mg doped GaN nanowires containing passivated Mg-O complex decreases with increasing the diameter, and reduces to 300 meV as the diameter of the GaN nanowire is larger than 2.01 nm, which indicates that Mg-O codoping is suitable for achieving p-type GaN nanowires with larger diameters. The codoping method to reduce the ionization energy can be effectively used in other semiconductor nanostructures.


Page:
103112 (3 pp.)---103112 (3 pp.)103112 (3 pp.)


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