1. Thermal conductivity and Raman-active vibration properties of TiS3 nanoribbon investigated by temperature-dependent Raman spectroscopy.
- Author
-
Zhang, Mengen, Xue, Xinyi, Cao, Xueqin, Lei, Zhen, Wu, Ruowei, Huang, Yuanyuan, and Xu, Xinlong
- Subjects
RAMAN spectroscopy ,THERMAL conductivity ,HEAT conduction ,TRANSITION metals ,PHONONS - Abstract
We have investigated the thermal conductivity and vibration properties of TiS
3 nanoribbon via micro-Raman spectroscopy. Based on the Raman spectra, the calculated temperature coefficients of the four A g 1 modes of the TiS3 nanoribbon sample are −0.0140, −0.0136, −0.0179, and −0.0172 cm−1 K−1 , respectively, which are higher than that of traditional nanomaterials graphene and MoS2 . The Raman frequency shift of TiS3 provides a powerful non-contact method to determine its local temperature rise, which is caused by the anharmonic coupling of phonons. From temperature coefficient and power coefficient values, the in-plane thermal conductivity of the TiS3 supported by SiO2 /Si substrate has been calculated to be 187.2 ± 28.9 W/mK with weak anisotropy due to the substrate and size effects. This work paves a way to understand the heat conduction characteristics of transition metal trisulfide. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF