Abstract
Exciton binding energies for wurtzite (WZ) GaN/AlxIn1−xN quantum dots (QDs) with piezoelectric (PZ) and spontaneous (SP) polarizations were investigated by using an effective mass theory. The exciton binding energy gradually decreases with increasing Al content x in the barrier. This can be explained by the fact that the wave functions spreads into the barrier region with decreasing Al content and a higher dimensional character of the exciton is restored. The exciton binding energies for the case with PZ and SP polarizations appears to be much smaller than that for the flat-band model without the built-in field due to PZ and SP polarizations. However, their difference is observed to be negligible due to reduction in carrier confinement for the case with a relatively low Al content (x = 0.7).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
