Figure 1
From: Electron-Selective TiO2 Contact for Cu(In,Ga)Se2 Solar Cells

(a) Process schematic of the TiO2/CIGS solar cell, (b) photograph of the TiO2/CIGS solar cell device, (c) SEM cross-sectional view of a fully fabricated TiO2/CIGS solar cell prepared by FIB, (d) high resolution SEM cross-sectional view of ITO/TiO2/CIGS. The sample was coated with Pt to protect it during the FIB cut.