Tailoring exciton dynamics by elastic strain-gradient in semiconductors.
basic_science · Level V
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- Record sourced from PubMed, PMID 24470383.
- Also identified by DOI 10.1002/adma.201305058.
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Abstract
In purely bent ZnO microwires, the excitons can be effectively driven and concentrated by the elastic strain-gradient towards the tensile outer side of the purely bent wire. Experimental and theoretical approaches are combined to investigate the dynamics of excitons in an inhomogeneous strain field with a uniform elastic strain-gradient. Cathodoluminescence spectroscopy analysis on purely bent ZnO microwires verifies that excitons can be effectively driven and concentrated along the elastic strain-gradient.