Figure 7

(a) Overview spectrum of NDAC800 with 1 eV resolution, (b) C1s, (c) N1s and (d) O1s High resolution of XPS core level spectra.

(a) Overview spectrum of NDAC800 with 1 eV resolution, (b) C1s, (c) N1s and (d) O1s High resolution of XPS core level spectra.