TY - JOUR
T1 - Probing the Temperature-Dependent Thermal Conductivity of Violet Phosphorus via Optothermal Raman Spectroscopy
AU - Lu, De
AU - Tan, Jiayu
AU - Zhang, Mengen
AU - Shi, Mingjian
AU - Feng, Xukun
AU - Cai, Minxiao
AU - Zhang, Jinying
AU - Huang, Yuanyuan
AU - Xu, Xinlong
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2024/9/5
Y1 - 2024/9/5
N2 - The temperature-dependent thermal conductivity of violet phosphorus on a perforated SiO2/Si substrate has been investigated via optothermal Raman spectroscopy. The obtained temperature coefficients of the Tg mode and Ptub mode of the violet phosphorus sample are −0.01268 and −0.01789 cm-1 K-1, respectively. On the basis of the temperature coefficients and power coefficients, the thermal conductivity of the violet phosphorus has been calculated to be 44.642 ± 4.995 W/mK at room temperature, which is higher than that of other two-dimensional materials such as black phosphorus and MoS2 due to the effect of boundary scattering and the phonon mean free path. Additionally, the thermal conductivity of violet phosphorus decreases as a power exponential function of the temperature, which is primarily associated with the phonon mean free path and phonon group velocity. This work provides a scientific foundation for thermal management and heat dissipation in designing micro-nano devices with violet phosphorus.
AB - The temperature-dependent thermal conductivity of violet phosphorus on a perforated SiO2/Si substrate has been investigated via optothermal Raman spectroscopy. The obtained temperature coefficients of the Tg mode and Ptub mode of the violet phosphorus sample are −0.01268 and −0.01789 cm-1 K-1, respectively. On the basis of the temperature coefficients and power coefficients, the thermal conductivity of the violet phosphorus has been calculated to be 44.642 ± 4.995 W/mK at room temperature, which is higher than that of other two-dimensional materials such as black phosphorus and MoS2 due to the effect of boundary scattering and the phonon mean free path. Additionally, the thermal conductivity of violet phosphorus decreases as a power exponential function of the temperature, which is primarily associated with the phonon mean free path and phonon group velocity. This work provides a scientific foundation for thermal management and heat dissipation in designing micro-nano devices with violet phosphorus.
UR - https://www.scopus.com/pages/publications/85202051317
U2 - 10.1021/acs.jpclett.4c02000
DO - 10.1021/acs.jpclett.4c02000
M3 - 文章
C2 - 39177269
AN - SCOPUS:85202051317
SN - 1948-7185
VL - 15
SP - 8942
EP - 8948
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 35
ER -