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The second method for measuring InP nanowires perpendicular to the measurement table: a) placement of the sample, b) view from the optical microscope.SEM in-lens images of InP nanowires: (a) A - undoped, (b) B - doped with Si, (c), (d) C - doped with Te.Raman spectra of undoped InP nanowires (blue line), InP nanowires doped with Si (red line) and Te (black line).Histogram of the FWHM TO band for undoped InP nanowires (blue color), InP nanowires doped with Si (green color) and Te (white color).Raman spectra for InP nanowires doped with Te. The presented spectra were chosen in such a way so as to get the highest lines below the TO band.