Figure 3 | Scientific Reports

Figure 3

From: Rough gold films as broadband absorbers for plasmonic enhancement of TiO2 photocurrent over 400–800 nm

Figure 3

(a) Photographs of the TiO2-Au bilayer samples with the TiO2 thicknesses of 0, 5, 10, 20, 30 and 50 nm. The films are deposited by the ALD at 100 °C and then annealed at 500 °C for 1 h; (b) atomic force micrograph of the surface morphology of the rough Au film on the FTO substrate; (c) the XRD patterns of the bare TiO2 film, the bare Au film and the FTO substrate; and (d) the absorption spectra of different TiO2-Au bilayer samples.

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