“…Tian et al (2020) introduced interface effect into PSC composites to provide possible extra tuning opportunities. Furthermore, fracture problem in PSCs has also received considerable attention in recent years (Hu et al, 2007;Sladek et al, 2014aSladek et al, , 2014bSladek et al, , 2015Zhao et al, 2016Zhao et al, , 2017Zhao et al, , 2018. More recently, a double iteration method was proposed to analyze the crack problem in a 2D piezoelectric semiconductor with more accurate and real electric boundary conditions (Zhao et al, 2020a).…”