Research Article
Quantitative Analysis and Band Gap Determination for CIGS Absorber Layers Using Surface Techniques
Figure 3
(a–d) SIMS depth profiles and (e–h) Na 1s peaks in the XPS spectra of the CIGS solar cells: (a, e) B01, (b, f) B02, (c, g) B03, and (d, h) B04.
(a) |
(b) |
(c) |
(d) |
(e) |
(f) |
(g) |
(h) |