Table 1 Structural and electronic parameters of \(\hbox {Sb}_2\hbox {X}_3\) (X = S, Se, Te) monolayers as shown in Fig. 1b, including lattice constants \(\mathbf{a},b \); the bond lengths between Sb-X atoms \(d_{1,2,3,4}\); the bond angles between X-Sb-X atoms \(\theta _{1,2,3}\); the thickness defined by the difference between the largest and smallest z coordinates of X atoms (t); the cohesive energy per atom, \((E_{coh})\); the charge transfer \((\Delta {Q})\) between atoms Sb and \(X_{1}\) (\(X_{2}\)) atoms are shown inside (outside) parentheses as shown in Fig. 1b; the work function \((\Phi ).\)

From: Ab initio prediction of semiconductivity in a novel two-dimensional Sb₂X₃ (X= S, Se, Te) monolayers with orthorhombic structure