Journal
PHYSICAL REVIEW B
Volume 83, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.155320
Keywords
-
Funding
- French ANR agency [ANR-08-NANO-031, ANR-08-BLAN-0179]
- Agence Nationale de la Recherche (ANR) [ANR-08-BLAN-0179] Funding Source: Agence Nationale de la Recherche (ANR)
Ask authors/readers for more resources
We analyze the correlation between the structural and optical properties of GaN/AlN coherent core-shell nanowire heterostructures, with different AlN shell thicknesses. The presence of an AlN shell induces a nearly uniaxial compressive strain in the core epsilon(c)(zz) oriented along the nanowire axis, which translates into a blueshift of the photoluminescence. The dependence of the photoluminescence shift on the uniaxial strain is experimentally established on the basis of correlated microphotoluminescence and high-resolution scanning transmission electron microscopy on a large number of single nanowires. The results confirm the crossing of X(A) and X(C) exciton energies at e(zz)(c) = 0.35%-0.5%, with a shell-to-core volume ratio V(AlN)/V(GaN)=0.1-0.15, as predicted by the elastic theory for purely uniaxial strain.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available