X-ray photoemission spectroscopy investigation of CaTiO3:Eu for luminescence property: effect of Eu3+ ion

• Single phase CaTiO3 and CaTiO3: Eu crystals were prepared under mild hydrothermal method.
• Crystal structure, doping level and the relations to their luminescent property were discussed.
• Charge compensation mechanism was discussed via valance band spectrum by XPS.

Charge compensation of on-site Eu 4f–5d transition that determines the luminescent performance was confirmed with valance band spectrum. Influence of photoelectrons from CaTiO3: Eu to the corresponding luminescent performance was discussed based on the crystal structure, doping level and the relations to their luminescent property. This paper is important to further optimize the luminescent performance for improving the efficiency and reducing the cost in light emitting diode industry.

The influence on the photoluminescent performance due to the electronic structure change in Eu-doped CaTiO3 of the specific core-level and valence band spectrum via X-ray photoemission spectroscopy were characterized.Figure optionsDownload as PowerPoint slide