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. 2018 Sep 6;9:3618. doi: 10.1038/s41467-018-06124-1

Fig. 3.

Fig. 3

Material characterisations and electronic band properties of 2D GaPO4. a XRD and b Raman spectra of the synthesised GaPO4 (thick nanosheets). XPS results of c Ga 3d and d phosphorous 2p regions of the synthesised GaPO4. e Enlarged view of EELS for the estimation of the fundamental bandgap and the extended EELS spectrum (inset). f XPS valence band analysis of GaPO4