Electrochemical Deposition of Cu_xSn_yS_zO Thin Films and Their Application for Heterojunction Solar Cells

Figure 10

(a) XPS spectra for the ZnO and CTSO films. The CTSO film was deposited under condition 1. (b) expanded spectrum near VBM for CTSO. The straight line in (b) is the linear extrapolation of the leading edge, and the intercept on the energy axis corresponds to the VBM position.

(a)

(b)