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

  • 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

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.

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

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Published
2018-07-03
How to Cite
Berezovska, N., Dmitruk, I., Kalyuzhnyy, A., Dmytruk, A., & Blonskyi, I. (2018). Self-Organized Structuring of the Surface of a Metal–Semiconductor Composite by Femtosecond Laser Processing. Ukrainian Journal Of Physics, 63(5), 406. Retrieved from https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018073/76
Section
Surface physics