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Transmission electron microscopy images of samples S340, S380, S420, and S460 showing InP NWs with wurtzite structure and few zinc-blende segments.
(Color online) (a) PL spectra of the samples at 14 K and μ-PL spectrum of a single NW at 10 K. (b) Time-resolved PL performed on the Wz peaks at 14 K with a 2.4 μJ/cm2 excitation power. The curves are normalized and offset for a better visibility.
(Color online) Linewidth of the Wz peak as a function of the excitation power. Spectra of the sample S380 are shown in inset.
(Color online) Wz exciton lifetime of the samples S340, S380, and S420 as a function of the excitation power.
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