Photovoltaic properties of the Bi/sub 4/Ti/sub 3/O/sub 12//Si heterostructures

Photovoltaic properties of the Bi/sub 4/Ti/sub 3/O/sub 12//Si heterostructures were investigated in the 250-1100 nm wavelength range. Four bands centered on 400 nm, 500 nm, 865 nm and 1025 nm are observed in the normalized spectral distributions. The relative amplitude of the peaks corresponding to these bands depends on the annealing temperature and ferroelectric polarization.