Title:	Nanosecond Laser Surface Texturing of Crystalline Silicon in Ambient Air and Water
Authors:	Arjun, Kandya Karimbana Anoop, K K Philip, Reji
Issue Date:	Jun-2020
Publisher:	AIP Publishing
Citation:	AIP Conference Proceedings, 2020, Vol.2244, p070010, Proceedings of the International Conference on Physics of Materials and Nanotechnology ICPN 2019
Abstract:	Laser surface structuring is a versatile physical method to alter the surface morphology and subsequent surface properties of solid materials. In this work, we report the role of ambient conditions in nanosecond laser (Nd:YAG laser, τ = 7 ns) surface texturing of silicon, and the optical and morphological characterization of textured samples. We performed multiscale texturing (5 mm × 5 mm) on silicon by keeping the target in air as well as in water. The significant differences in the morphological and optical properties of textured samples indicate that the ambience (air or water) has a crucial role in laser material processing. 3D topographical analysis shows that nanosecond laser texturing performed in air offers more roughness to the silicon surface, which results in much reduced optical reflection (R ≈ 10% in the visible region) from the textured surface. Laser texturing has numerous applications in material science, industry, and biomedical fields and our results indicate that materials with specific surface roughness and reflectivity can be fabricated by changing the ambient conditions of laser texturing.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/7542
ISSN:	9780735420038
Alternative Location:	https://ui.adsabs.harvard.edu/abs/2020AIPC.2244g0010A/abstract https://doi.org/10.1063/5.0009096
Copyright:	2020 American Institute of Physics
Appears in Collections:	Research Papers (LAMP)

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