Figure 3

(a) Detected count rate of \(X^-\) photons as a function of CW excitation power for 14 nanowire devices. (b) Radiative decay rates of the charged exciton complexes in (a). (c) Histogram of detected count rates at \(\hbox {P}_{{\mathrm {sat}}}\) of \(X^{-1}\) photons using pulsed excitation at 80 MHz. Top axis shows source efficiency (i.e. counts at first lens) (d) As above but counting both \(X^{-1}\) and X photons. Top axis shows collection efficiency (i.e. counts from unfiltered photons directed up the nanowire).