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Epitaxial 200nm BiFe$_{0.95}$Mn$_{0.05}$O$_{3}$ (BFO) film was grown bypulsed laser deposition on (111) oriented SrTiO3 substrate buffered with a 50nmthick SrRuO$_{3}$ electrode. The BFO thin film shows a rhombohedral structureand a large remnant polarization of Pr = 104 $\mu$C/cm$^{2}$. By comparing I(V)characteristics with different conduction models we reveal the presence of bothbulk limited Poole-Frenkel and Schottky interface mechanisms and each onedominates in a specific range of temperature. At room temperature and under10mW laser illumination, the as grown BFO film presents short-circuit currentdensity (Jsc) and open circuit voltage (Voc) of 2.25mA/cm$^{2}$ and -0.55Vrespectively. This PV effect can be switched by applying positive voltagepulses higher than the coercive field. For low temperatures a large Voc valueof about -4.5V (-225kV/cm) is observed which suggests a bulknon-centrosymmetric origin of the PV response.

Conduction mechanism and switchable photovoltaic effect in (111) oriented BiFe$_{0.95}$Mn$_{0.05}$O$_{3}$ thin film