Figure 1From: Performance-improved thin-film a-Si:H/μc-Si:H tandem solar cells by two-dimensionally nanopatterning photoactive layerDevice and duty cycle optimization. (a) Schematic diagram of a-Si:H/μc-Si tandem TFSCs with a-Si:H layer nanopatterned into 2D grating; (b) maximal total current, max(Jtot), as a function of duty cycle (b/Λ).Back to article page