Theoretical study of optical properties of non-polar BAlGaN/AlN quantum wells lattice-matched to AlN
Abstract
Light emission characteristics of non-polar ultraviolet (UV) BxAlyGa1-x-yN/AlN quantum well (QW) structures lattice-matched to AlN substrate were theoretically investigated using the multiband effective-mass theory. The peak intensity of the non-polar BAlGaN/AlN QW structure lattice-matched to AlN is found to be much larger than that of the c-plane BAlGaN/BAlGaN QW structure lattice-matched to AlN. Also, the lattice-matched BAlGaN/AlN QW structure shows a large polarization ratio and its value changes from 0.7 to 0.9 in an investigated range of carrier density. We expect that non-polar BAlGaN/BAlGaN QW structures lattice-matched to AlN could be used as a UV light source with a higher crystal quality.
- Publication:
-
Solid State Communications
- Pub Date:
- March 2019
- DOI:
- 10.1016/j.ssc.2019.01.006
- Bibcode:
- 2019SSCom.290...67P