Blueshift in MgxZn1-xO alloys: nature of bandgap bowing
A Mg composition-dependent blueshift has been studied in MgxZn1−xO alloys deposited on 6H-SiC(0001) substrates. The localized exciton energy in MgxZn1−xO alloys for x ∼ 0.3 was blueshifted in the range 212–248 meV. The large negative bowing parameter was estimated in MgxZn1−xO alloys to be 4.72±0.84 eV. This large bandgap bowing emphasizes the Stokes shift, which has been attributed to the existence of spontaneous polarization effects due to the polar growth of MgxZn1−xO/SiC heterostructure and...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of Applied Physics|
|Ashrafi_Blueshift2008.pdf||409.22 kB||Adobe PDF|
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