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(a) FESEM micrograph of the 100 nm WZ InP nanowires (substrate tilted to 45°). (b) TEM micrograph of an InP nanowire showing the excellent crystallinity. A 100 nm gold catalyst can be seen at the end of the NW.
Representative power-dependent CW PL spectra for a single 100 nm WZ InP NW.
(a) Time-resolved spectral map of a single WZ InP 100 nm NW. (b) Early and late time spectra extracted from TRPL Map showing temporal evolution from band edge emission to defect emission.
PLE spectrum (right) from a single 100 nm WZ InP NW showing three excitation resonances marked A, B, and C. Filtered PL spectrum (left) showing the defect emission for laser excitation tuned to the resonance marked B.
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