Laser ablation in conjunction with Raman spectroscopy can be used to attain a controllable reduction of the thickness of exfoliated black phosphorus flakes and simultaneous measurement of the local temperature. However, this approach can be affected by several parameters, such as the thickness-dependent heat dissipation. Optical, thermal, and mechanical effects in the flakes and the substrate can influence the laser ablation and may become a source of artifacts on the measurement of the local temperature. In this work, we carry out a systematic investigation of the laser thinning of black phosphorus flakes on SiO2/Si substrates. The counterintuitive results from Raman thermometry are analyzed and elucidated with the help of numerical solutions of the problem, laying the groundwork for a controlled thinning process of this material.

Faraone, G., Sipala, R., Mariani, M., Martella, C., Grazianetti, C., Molle, A., et al. (2021). Probing the Laser Ablation of Black Phosphorus by Raman Spectroscopy. JOURNAL OF PHYSICAL CHEMISTRY. C, 125(16), 8704-8711 [10.1021/acs.jpcc.1c01443].

Probing the Laser Ablation of Black Phosphorus by Raman Spectroscopy

Faraone G.;Bonera E.
2021

Abstract

Laser ablation in conjunction with Raman spectroscopy can be used to attain a controllable reduction of the thickness of exfoliated black phosphorus flakes and simultaneous measurement of the local temperature. However, this approach can be affected by several parameters, such as the thickness-dependent heat dissipation. Optical, thermal, and mechanical effects in the flakes and the substrate can influence the laser ablation and may become a source of artifacts on the measurement of the local temperature. In this work, we carry out a systematic investigation of the laser thinning of black phosphorus flakes on SiO2/Si substrates. The counterintuitive results from Raman thermometry are analyzed and elucidated with the help of numerical solutions of the problem, laying the groundwork for a controlled thinning process of this material.
Articolo in rivista - Articolo scientifico
Raman spectroscopy; Lasers; Ablation; Thickness; Power;
English
8704
8711
8
Faraone, G., Sipala, R., Mariani, M., Martella, C., Grazianetti, C., Molle, A., et al. (2021). Probing the Laser Ablation of Black Phosphorus by Raman Spectroscopy. JOURNAL OF PHYSICAL CHEMISTRY. C, 125(16), 8704-8711 [10.1021/acs.jpcc.1c01443].
Faraone, G; Sipala, R; Mariani, M; Martella, C; Grazianetti, C; Molle, A; Bonera, E
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/370648
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