Ontology highlight
ABSTRACT:
SUBMITTER: Shiri D
PROVIDER: S-EPMC3375500 | biostudies-other | 2012
REPOSITORIES: biostudies-other
Scientific reports 20120615
We computationally study the effect of uniaxial strain in modulating the spontaneous emission of photons in silicon nanowires. Our main finding is that a one to two orders of magnitude change in spontaneous emission time occurs due to two distinct mechanisms: (A) Change in wave function symmetry, where within the direct bandgap regime, strain changes the symmetry of wave functions, which in turn leads to a large change of optical dipole matrix element. (B) Direct to indirect bandgap transition w ...[more]