Figure 5.

Optical reflectance spectrum of the cells. The optical reflectance spectrum of the cells over the full spectrum ranging from 400 to 1,100 nm. The black line and green line represent the spectra of the SiNW-based μc-Si:H thin-film solar cells with acid treatment and without acid treatment, respectively. The red line represents the reflectance of the corresponding planar μc-Si:H film solar cell.