Photoluminescence behavior of Cu-ion-doped perovskite zirconate nanostructures: Relationship between the structural and electronic properties

초록

We investigated the Cu-ion-doping-induced visible emission of SrZrO3 nanocrystals (NCs) by using 325-nm photo-excitation. The Cu-ion-doped NCs were synthesized by using the combustion method; then, the as-synthesized NCs were annealed at different temperatures ranging from 800 A degrees C to 1400 A degrees C. In the photoluminescence spectra, we observed a sizable orange emission induced by the Cu-ion doping in addition to a blue-violet emission due to structural disorder within the host compound. With increasing annealing temperature, the orange emission became stronger while the blue-violet emission was gradually suppressed. The intriguing change in the emission color is discussed based on its close relation to the structural property of our doped NCs.

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