Additional file 1: Figures S1 to S3.

Figure S1: EDS elemental spectrum of 2% Ti-doped ZnO (inset table represents atomic percentages). Figure S2: I-V curve of Au/ZnO/ITO (a) linear scale (b) semi logarithmic scale. Figure S3: Endurance performance of the pure ZnO.

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Younis et al. Nanoscale Research Letters 2013 8:154   doi:10.1186/1556-276X-8-154