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Abstract
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Here, the solar cell surface is irradiated with ArF excimer laser at 193 nm. This process forms regular micro/
nanostructures on the samples, most likely due to the surface resonance phenomena. Laser induced surface
rippling in the form of the conical micro/nanostructures or micro/nano-pillars are strongly dependent on the
energy dose which induces a great number of micro/nano cavities on the surface. Despite the reflection events
are taken into account as the major source of the optical losses, however the laser induced self-micro/nano
structuring significantly reduces the spectral reflectivity. It leads to enhance the efficiency of solar cell
accordingly. The effect of laser fluence is also investigated as to several forms of the micro/nanostructures
are created at various UV doses. Finally, the electrical characterization is carried out based on the current–
voltage plots. The surface morphology is analyzed using SEM and the spectral reflectivity is measured by the
spectrophotometry, indicating that the current density rises due to the light trapping in micro/nano-cavities.
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