Directional mechanical and thermal properties of single-layer black phosphorus by classical molecular dynamics. (January 2018)

• Record Type: Journal Article
• Authors: Maryam, Afira; Abbas, Ghulam; Rashid, Muhammad; Sattar, Atif
• Is Part Of: Chinese physics B. Volume 27:Number 1(2018)
• Publication Date: 2018-01
• Subjects: electric and thermal conductivity -- molecular dynamics methods -- carbon/carbon-based materials; 74.25.fc -- 47.11.Mn -- 81.05.U-; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1674-1056/27/1/017401
• Languages: English
• ISSNs: 1674-1056

Abstract

Abstract : Black phosphorus (BP) has received attention due to its own higher carrier mobility and layer dependent electronic properties, such as direct band gap. Interestingly, the single layer black phosphorus (SLBP) has had large popularity in applications related to thermoelectric, optoelectronic, and electronic devices. Here, we investigate the phonon spectrum, thermal conductivities, and stress strain effects. Robust anisotropy was mainly observed in the thermal conductivities together with the alongside zigzag (ZZ) direction value, compared to the armchair (AC) directions. We also investigated the attitude of stress that was anisotropic in both directions, and the stress effects were two times greater across the ZZ path than those in the AC direction at a low temperature. We obtained a Young's modulus of 63.77 and 20.74 GPa in the AC and ZZ directions, respectively, for a strain range of 0.01. These results had good agreement with first principle calculations. Our study here is useful and significant for the thermal tuning of phosphorus-based nanoelectronics and thermalelectric applications of phosphorus.