Figure 4: Comparison of optical, charge transport and charge transfer properties. | Nature Communications

Figure 4: Comparison of optical, charge transport and charge transfer properties.

From: Codoping titanium dioxide nanowires with tungsten and carbon for enhanced photoelectrochemical performance

Figure 4

(a) Light absorption (plus scattering) of undoped (black), W-doped (blue), C-doped (green) and (W, C)-codoped TiO2 NW (red) arrays grown on quartz. The integrated light absorption (plus scattering) values calculated by integrating over the wavelength, are 59.5%, 60.7%, 61.1% and 64.0% for undoped, W-doped, C-doped, and (W, C)-codoped TiO2 NWs, respectively. (b) Charge transport efficiencies. (c) Charge transfer efficiencies. (d) Current–voltage curves of single NW. The inset shows the scanning electron microscopy image of single TiO2:(W, C) NW with metal (Pt) contacts at both ends. Scale bar, 1 μm.

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