Optical, structural and morphological studies of nanostructures fabricated on silicon surface by femtosecond laser irradiation

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dc.contributor.authorKuladeep, Rajamudili
dc.contributor.authorJyothi, L.
dc.contributor.authorSahoo, Chakradhar
dc.contributor.authorNarayana Rao, D.
dc.contributor.authorSaikiran, V.
dc.date.accessioned2022-03-30T10:09:24Z
dc.date.available2022-03-30T10:09:24Z
dc.date.issued2022-01-03
dc.description.abstractWe report here a detailed analysis of the ultrashort laser pulse irradiation effects on a single crystalline silicon surface. A systematic study has been performed to understand the surface morphological changes under irradiation with ultrashort laser pulses by changing different input laser parameters such as laser fluence, laser pulse number, and incident laser polarization. Field emission scanning electron microscopy images reveal the formation of laser induced periodic sub-wavelength surface structures directly on bulk surface. The orientation of the formed sub-wavelength surface structures is perpendicular to the incident laser polarization and their morphology and spatial periodicity strongly depend on the applied laser fluence and laser pulse number. The sub-wavelength surface structures are accompanied by the formation of a large density of silicon nanoparticles which possess broad visible photoluminescence ranging from 410 to 680 nm which is due to superficial oxidation of silicon during laser irradiation. The amount of oxygen incorporated into silicon strongly depends on laser parameters such as laser fluence and number of laser pulses.en_UK
dc.identifier.citationRajamudili K, Jyothi L, Sahoo C, et al., (2022) Optical, structural and morphological studies of nanostructures fabricated on silicon surface by femtosecond laser irradiation. Journal of Materials Science, Volume 57, Issue 3, January 2022, pp. 1863-1880en_UK
dc.identifier.issn0022-2461
dc.identifier.urihttps://doi.org/10.1007/s10853-021-06712-5
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/17709
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.subjectfemtosecond laseren_UK
dc.subjectlaser-induced periodic surface structuresen_UK
dc.subjectLIPSSen_UK
dc.subjectsilicon nanostructuresen_UK
dc.subjectphotoluminescenceen_UK
dc.titleOptical, structural and morphological studies of nanostructures fabricated on silicon surface by femtosecond laser irradiationen_UK
dc.typeArticleen_UK

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