BULK PHOTOVOLTAIC EFFECT FOR THE LINEARLY POLARIZED-LIGHT IN PB(ZN1 3NB2/3)O-3 SINGLE-CRYSTALS/

The bulk photovoltaic effect in non-centrosymmetric crystals is caused by asymmetric generation, recombination or scattering of excited none quilibrium electronic carriers. In this paper, the photovoltaic effect has been investigated in relaxer ferroelectric Pb(Zn1/3Nb2/3)O-3 sing le crystals using linearly polarized light. Angular dependence of phot ovoltaic voltage and current on the polarization direction of light wa s observed in the crystal. A phenomenological model was proposed to fi t the experimental results from which the photovoltaic coefficients we re calculated.