Figure 2.

XPS narrow-scan spectra from the ZGO crystallites. (a) XPS narrow-scan spectrum of Zn 2p3/2. (b) XPS narrow-scan spectrum of Ge 3d. (c) XPS narrow-scan spectrum of O 1 s.

Liang and Lin Nanoscale Research Letters 2014 9:344   doi:10.1186/1556-276X-9-344
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