Spectroscopic and photorefractive properties of molybdenum-doped barium titanate

Abstract

Molybdenum-doped barium titanate crystals have been grown and characterized. Electron paramagnetic resonance spectroscopy has confirmed the presence of Mo5+ centers in reduced crystals that correlate with a strong optical absorption band at ∼600 nm. Self-pumped phase-conjugation and electro-optic beam-coupling measurements indicate that the reduced crystals are photorefractive in the visible, as well as the near-infrared wavelength region.

Photoluminescence of disordered ABO3 perovskites

“…1,2 Within this class of materials, BaTiO 3 ͑BT͒, PbTiO 3 ͑PT͒, and SrTiO 3 ͑ST͒, in their crystalline form, display a semiconductor behavior and have an energy band gap of about 3.0 eV. These materials are processed by solid state reaction or chemical synthesis, such as sol-gel.…”

Photoluminescence at room temperature in amorphous SrTiO3 thin films obtained by chemical solution deposition

“…There is much interest in the areas of science and technology in perovskite-type structured compounds with the chemical ABO 3 formula (A and B are cations while O is the oxygen anion), owing to their wide range of electronic applications [1][2][3][4]. Within this class of compounds, SrTiO 3 and BaTiO 3 , in their crystalline form, display a semiconductor behavior.…”

“…Within this class of compounds, SrTiO 3 and BaTiO 3 , in their crystalline form, display a semiconductor behavior. In addition, when pure SrTiO 3 and BaTiO 3 samples are excited by radiation above their energy band gaps, which normally range from 3.0 to 3.2 eV for BaTiO 3 and 3.4 eV for SrTiO 3 , a broad luminescent band appears at low temperatures [5,6].…”

Atomic scale structure and dynamics characteristics simulation of amorphous SrTiO3 by molecular dynamics

“…There has been sustaining strong interest in perovskite-type compounds with a chemical formula of ABO 3 , owing to their wide range of electronic applications [1,2]. SrTiO 3 (STO) is a well known perovskite-type paraelectric oxide with a large dielectric constant.…”