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Potential of Photocurrent Improvement in μc‐Si:H Solar Cells with TCO Substrates Structured by Direct Laser Interference Patterning  

Thin film solar cells based on weak absorbers like hydrogenated microcrystalline silicon (µc–Si:H) need an effective light management to maximize light absorption. In this work, the authors study numerically the light trapping capability of boron doped zinc oxide (ZnO:B)‐coated substrates textured by direct laser interference patterning (DLIP). The geometric parameters of the simulated patterns are taken from measurements of DLIP processed samples with sine‐like grooves. The results suggest that this technology is suitable to enhance the photocurrent by 15–35% of µc–Si:H solar cells deposited on ZnO:B using texture periods between 0.8 and 1.5 µm and a 2 µm active layer.