Absorption, light-induced absorption, photoconductivity and dark conductivity measurements are performed on Bi 12 TiO 20 (BTO) crystals doped with different concentrations of ruthenium. It is found that a higher ruthenium addition shifts the optical absorption to the near-IR spectral region in comparison with non-doped BTO crystals and the absorption changes increase with increasing Ru content. The dark conductivity follows the Arrhenius law with an activation energy of 0.89 eV. From the measured light-induced absorption and nonlinear photoconductivity the participation of a shallow level in the charge transport mechanism in Ru-doped BTO crystals is suggested. Highly Ru-doped BTO samples possess infrared sensitivity and holographic gratings are successfully recorded at 790 and 825 nm, respectively.
No takes yet. Share an insight, caveat, or question.
Marinova et al. (2003) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: