In:
International Journal of Modern Physics B, World Scientific Pub Co Pte Ltd, Vol. 29, No. 08 ( 2015-03-30), p. 1550054-
Abstract:
Valence intersubband transitions of the wurtzite (WZ) strained AlGaN/GaN quantum wells are examined theoretically and compared with those of the zinc-blende (ZB) ones. In particular, the effect of the interband interaction between conduction (CB) and valence (VB) bands has been taken into account explicitly. We have used the 8-bands k.p model for both WZ and ZB structures to calculate subband energies and wavefunctions of Al 0.3 Ga 0.7 N/GaN quantum wells (QWs). The results indicate that, the prominent transitions for both ZB and WZ QWs were found to be essentially related to the heavy- and light-hole subbands. For the x-polarization, we have shown that it is necessary to take into account explicitly the interband interaction between CB and VB. Finally, we can predict that WZ QWs are more convenient than ZB QWs in most applications involving intersubband transitions, especially for the z-polarized light.
Type of Medium:
Online Resource
ISSN:
0217-9792
,
1793-6578
DOI:
10.1142/S021797921550054X
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2015
Permalink