Sanbing Li

May 3, 2024 | link.aps.org | Yuchen Zhang |Xiaojie Wang |Sanbing Li |Yuejian Jiao

We report that the photovoltaic (PV) effect in nanoscale monocrystalline lithium niobate (LN) films originates from the Schottky barrier formed at the electrode-LN interface, different from the bulk PV effect reported previously in the bulk crystal. The Schottky barrier height and the depletion layer width at the Cr-LN interface was measured to be 1.15 eV and 16 nm, respectively.