Table 1: Peak area percentages of the S 2p components observed in the XPS spectra of the DEDTC-treated samples.

Binding energy of 
the S 2p3/2 peak
Dipping time in ADEDTC solution
20 min40 min60 min

163.0 ± 0.2 eV66%53%35%
169.0 ± 0.2 eV34%47%65%