Wet-Chemical Surface Texturing of Sputter-Deposited ZnO:Al Films as Front Electrode for Thin-Film Silicon Solar Cells

Figure 3

((a) and (c)) Optical transmittance (solid line) and absorbance (dash line), and ((b) and (d)) haze as a function of wavelength for two-step textured AZO by (left) HF/HCl etching and (right) HCl/HF etching. Arrows indicate the trends for increasing duration of the second etching step.