Optothermal Raman Spectroscopy of Black Phosphorus on a Gold Substrate.
- Resource Type
- Article
- Authors
- Bonera, Emiliano; Molle, Alessandro
- Source
- Nanomaterials (2079-4991). May2022, Vol. 12 Issue 9, p1410-1410. 9p.
- Subject
- Language
- ISSN
- 2079-4991
With black phosphorus being a promising two-dimensional layered semiconductor for application to electronics and optoelectronics, an issue remains as to how heat diffusion is managed when black phosphorus is interfaced with metals, namely in a typical device heterojunction. We use Raman spectroscopy to investigate how the laser-induced heat affects the phonon modes at the interface by comparing the experimental data with a finite element simulation based on a localized heat diffusion. The best convergence is found taking into account an effective interface thermal conductance, thus indicating that heat dissipation at the Au-supported black phosphorus nanosheets is limited by interface effect. [ABSTRACT FROM AUTHOR]