Physics – Computational Physics
Scientific paper
2009-07-22
PHYSICAL REVIEW B 80, 045311 (2009)
Physics
Computational Physics
Scientific paper
10.1103/PhysRevB.80.045311
We present first-principles calculations of AlGaN/GaN superlattice, clarifying the microscopic origin of the light emission and revealing the effect of local polarization within the quantum well. Profile of energy band and distributions of electrons and holes demonstrate the existence of a main active site in the well responsible for the main band-edge light emission. This site appears at the position where the local polarization becomes zero. With charge injection, the calculated optical spectra show that the broadening of the band gap at the active site leads to the blueshift of emission wavelength.
Cai Duanjun
Guo Guang Yu
Kang Junyong
No associations
LandOfFree
Microscopic origin of light emission in Al_yGa_{1-y}N/GaN superlattice: Band profile and active site does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Microscopic origin of light emission in Al_yGa_{1-y}N/GaN superlattice: Band profile and active site, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microscopic origin of light emission in Al_yGa_{1-y}N/GaN superlattice: Band profile and active site will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-128576