Table 2 Details of the fitting parameters for Sn3d, O1s and Zn2p core level XPS spectra of zinc tin oxide thinfilms. A1 and A2 represent integrated peak areas of the peak 1 and peak 2, respectively.

From: Tail state mediated conduction in zinc tin oxide thinfilm phototransistors under below bandgap optical excitation

Sample

Sn3d5/2

(eV)

O1s

Zn2p3/2

Peak 1 (eV)

Peak 2 (eV)

\(\frac{{\mathrm{A}}_{2}}{{\mathrm{A}}_{1}+{\mathrm{A}}_{2}}\)

Peak 1 (eV)

Peak 2 (eV)

\(\frac{{\mathrm{A}}_{2}}{{\mathrm{A}}_{1}+{\mathrm{A}}_{2}}\)

33ZTO

 

530.0

531.42

0.396

1021.37

1021.77

0.105

50ZTO

486.20

529.96

531.40

0.325

1021.78

1022.22

0.472

Identity

Sn–O

O2−

VO

Zn–O

Zni