Physical Properties and Photovoltaic Application of Semiconducting Pd₂Se₃ Monolayer.

ABSTRACT: Palladium selenides have attracted considerable attention because of their intriguing properties and wide applications. Motivated by the successful synthesis of Pd₂Se₃ monolayer (Lin et al., Phys. Rev. Lett., 2017, 119, 016101), here we systematically study its physical properties and device applications using state-of-the-art first principles calculations. We demonstrate that the Pd₂Se₃ monolayer has a desirable quasi-direct band gap (1.39 eV) for light absorption, a high electron mobility (140.4 cm²V^-1s^-1) and strong optical absorption (~10⁵ cm^-1) in the visible solar spectrum, showing a great potential for absorber material in ultrathin photovoltaic devices. Furthermore, its bandgap can be tuned by applying biaxial strain, changing from indirect to direc

SUBMITTER: Li X 

PROVIDER: S-EPMC6215269 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature