Strained nanowires with varying InAs/InP core-shell thicknesses were grownusing Chemical Beam Epitaxy. Microphotoluminescence spectroscopy, performed atlow temperature, was then used to study the optical properties of single wires.Emission from the InAs core was observed and its dependence on the shellthickness/core diameter ratio was investigated. We found that it is possible totune the emission energy towards 0.8 eV by controlling this ratio. We havecompared the measured energies with calculated energies. Our findings areconsistent with the wires having a hexagonal crystal structure.
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