Pr3+掺杂SrTiO3薄膜的聚合物前驱体法制备及发光性能

采用聚合物前驱体法,在LaNiO<,3>/si(100)衬底上低温制备了Pr<,3+>掺杂SrTiO<,3>薄膜.用XRD,AFM、PL手段分析了薄膜的晶体结构、表面形貌与发光性能.结果显示,退火温度决定SrTiO<,3>薄膜的晶粒大小和表面形貌,在600℃退火2 h获得的薄膜表面均匀、无裂痕,晶粒大小约为60 nm,...

Preparation and luminescence properties of Pr~(3+)-doped SrTiO_3 thin films synthesized by polymeric precursor method

Pr3+-doped SrTiO3 thin films were fabricated on LaNiO3/Si(100) substrate at low annealing temperature by polymeric precursor method.The crystal structure,surface morphology and luminescence properties of prepared thin films were studied by XRD,AFM and PL.The results show that,the grain size and surface morphology of prepared thin films are strongly influenced by the annealing temperature.When the thin film is prepared after annealing at 600 ℃ for 2 h,it is found to be smooth and crack free,with grain size and root-mean-square(RMS) surface roughness value of about 60 nm and 2.5 nm.Photoluminescence emission peaks are observed at 490,592 and 616 nm,which can be attributed to the energy-level transitions of 1D2→3H4 and 3P0→3H4 of Pr3+.The thin films with good luminescence properties have potential application in the light-emitting device due to the highly stable,water-based solution deposition method.