Self-Organized Structuring of the Surface of a Metal–Semiconductor Composite by Femtosecond Laser Processing

Authors

  • N. Berezovska Faculty of Physics, Taras Shevchenko National University of Kyiv
  • I. Dmitruk Faculty of Physics, Taras Shevchenko National University of Kyiv
  • A. Kalyuzhnyy Faculty of Physics, Taras Shevchenko National University of Kyiv
  • A. Dmytruk Institute of Physics, Nat. Acad. of Sci. of Ukraine
  • I. Blonskyi Institute of Physics, Nat. Acad. of Sci. of Ukraine

DOI:

https://doi.org/10.15407/ujpe63.5.406

Keywords:

solar cell, thin film, nanoparticle, laser-induced periodic surface structure, surface plasmon

Abstract

Peculiarities of the laser treatment of a composite consisting of a thin film of a metal (gold) on the surface of a semiconductor substrate [silicon (100)] have been studied. Micro- and nanostructurings of the metal-semiconductor composite sample have been achieved by the irradiation of its initial surface with a Ti : sapphire femtosecond laser. Laser ablation leads to the patterning of the surface of the composite with laser-induced periodic surface structures (LIPSS) and the formation of semiconductor nanohills, metal nanoparticles, and/or nanowires on the top of hills. The presence of some nanoscale surface features is confirmed by a low-frequency shift of the silicon phonon band in Raman spectra. Prepared microstructured surface barrier solar cells are characterized by means of scanning electron microscopy, optical spectroscopy, and photoelectric measurements.

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Published

2018-07-03

Issue

Section

Surface physics

How to Cite

Self-Organized Structuring of the Surface of a Metal–Semiconductor Composite by Femtosecond Laser Processing. (2018). Ukrainian Journal of Physics, 63(5), 406. https://doi.org/10.15407/ujpe63.5.406

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