File Name : figure s 1_supplementary information_.tif

Caption : <b>figure s 1.</b> the as-obtained standard deviation (<i>std</i>) from xps measurements of sample 4:1(<i>x</i>=0.2), 7:1(<i>x</i>=0.12) and 10:1(<i>x</i>=0.09).

File Name : figure s 2_supplementary information_.tif

Caption : <b>figure s 2.</b> the cross-sectional sem images of sample 6:1(<i>x</i>=0.14), 7:1(<i>x</i>=0.12), 8:1(<i>x</i>=0.11), 10:1(<i>x</i>=0.09), 12:1(<i>x</i>=0.08) and zno(<i>x</i>=0).