Room temperature photoluminescence of amorphous BaxSr1−xTiO3 doped with chromium |
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Authors: | DMA Melo A César ZR Silva E Longo |
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Institution: | a Department of Chemistry, UFRN - Campus Universitário, CEP-59072-970, Natal, RN, Brazilb LIEC/CMDMC, Department of Chemistry, UFSCar, Via Washington, Km 235, CP-676, CEP-13565-905, São Carlos, SP, Brazilc Department of Physics, UFSCar - Via Washinton Luis, km 235, CEP-13565-905, São Carlos, SP, Brazil |
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Abstract: | ABO3 amorphous materials, such as BaTiO3 (BT), SrTiO3 (ST), PbTiO3 (PT), and BaxSr1−xTiO3 (BST) have recently attracted a good deal of attention due to their ferroelectric and electro-optical properties. Intense photoluminescence at room temperature was observed in amorphous titanate doped with chromium (BaxSr1−xTi1−yCryO3) prepared by the polymeric precursor method. Results indicated that substantial luminescence at room temperature was achieved with the addition of small Cr contents to amorphous BaxSr1−xTi1−yCryO3. Further addition of Cr or crystallization were deleterious to the intensity of the luminescent peak obtained for excitation using λ=488.0 nm. |
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Keywords: | Amorphous SrTiO3 Photoluminescence Chromium |
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