Figure 5From: A composite CdS thin film/TiO2 nanotube structure by ultrafast successive electrochemical deposition toward photovoltaic applicationInfluence of precursor concentration on the formation of CdS. (a) (b) SEM and TEM images of samples with precursor concentration (Na2S and Cd(NO3)2) of 0.003 M, at voltage magnitudes of (a) 7.0 V and (b) 9.0 V, respectively. (c) (d) SEM and TEM images of samples with precursor concentration (Na2S and Cd(NO3)2) of 0.005 M; at voltage magnitudes of (c) 7.0 V and (d) 9.0 V, respectively. (e) Growth curve of as-deposited CdS content based on EDX data versus different applied bias voltage and different concentration of precursors. Detailed conditions of deposition can be found in Table 1.Back to article page