Improvement of Short-Circuit Current Density in p-O:Li/n-Si Heterojunction Solar Cells by Wet Chemical Etching

Figure 3

SEM micrographs (at 45° tilt) of AZOY thin films etched in 0.1 M HCl for (a) 0 s, (b) 10 s, (c) 20 s, and (d) 30 s.

(a)

(b)

(c)

(d)