Polarization-dependent photoluminescence study of InP nanowires. (a) SEM image of an as grown InP nanowire (b) SEM image of Ta₂O₅coated InP nanowires (c) Typical photoluminescence of as grown nanowires (red) and Ta₂O₅ coated nanowires (black). (d) Dependence of photoluminescence intensity on polarization angle between pump and collection path. As grown sample shows strong polarization dependence (red star), which is significantly attenuated by coating with Ta₂O₅ (black triangle).

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