Electro-optical properties of strained monolayer boron phosphide: A tight-binding study

This paper uses tight-binding approximation and linear response theory to study the electronic and optical properties of strained monolayer boron-phosphide (h-BP). Using previous DFT results, we propose a theoretical tight-binding approach to investigate the strain effects on the electronic and optical properties of the h-BP. Furthermore, we investigate the intra-band and inter-band optical conductivity of pristine and strained h-BP. The isotropic intra-band and inter-band optical conductivity of pristine h-BP are similar to graphene but applying uniaxial strain exerts anisotropic behavior in the system.