The purpose of this paper is to synthesize a micrometric inorganic perovskite CsPbCl_(3):Nd^(3+)and investigate the impact of doping with rare-earth ions on structural and optical properties,as well as energy transfer...The purpose of this paper is to synthesize a micrometric inorganic perovskite CsPbCl_(3):Nd^(3+)and investigate the impact of doping with rare-earth ions on structural and optical properties,as well as energy transfer pathways between the host and dopant.Herein,we report the solid-state reaction synthesis of a concentration series of CsPbCl_(3):x%Nd^(3+)annealed under a nitrogen atmosphere.Additional doping of a material that already exhibits luminescence with an optically active ion increases its application potential.Structural features were determined using X-ray powder diffraction and Raman spectroscopy.Morphology studies performed with scanning electron microscopy revealed micrometric,well-separated cubic-like crystallites with a good distribution of individual elements.Surprisingly,a photoluminescence(PL)study showed that only blue emission appears when the material is excited with a diode operating in the UV range.Apparently,the emission of Nd^(3+)ions can only be obtained with direct excitation of the lanthanide.The photoluminescence excitation(PLE)spectrum monitored for Nd^(3+)emission confirmed the lack of energy transfer between the host and dopant.Possible explanations for this behavior have been put forth and substantiated by the first-principles electronic structure calculations in the framework of hybrid density functional theory.展开更多
基金funded by the National Science Center,Poland,grant no.NCN-2021/43/D/ST5/01865the support from the National Natural Science Foundation of China(Grant No.52161135110 and 12274048)the support from the Scientific and Technological Research Program of the Chongqing Municipal Education Commission(Grant No.KJQN202200629).
文摘The purpose of this paper is to synthesize a micrometric inorganic perovskite CsPbCl_(3):Nd^(3+)and investigate the impact of doping with rare-earth ions on structural and optical properties,as well as energy transfer pathways between the host and dopant.Herein,we report the solid-state reaction synthesis of a concentration series of CsPbCl_(3):x%Nd^(3+)annealed under a nitrogen atmosphere.Additional doping of a material that already exhibits luminescence with an optically active ion increases its application potential.Structural features were determined using X-ray powder diffraction and Raman spectroscopy.Morphology studies performed with scanning electron microscopy revealed micrometric,well-separated cubic-like crystallites with a good distribution of individual elements.Surprisingly,a photoluminescence(PL)study showed that only blue emission appears when the material is excited with a diode operating in the UV range.Apparently,the emission of Nd^(3+)ions can only be obtained with direct excitation of the lanthanide.The photoluminescence excitation(PLE)spectrum monitored for Nd^(3+)emission confirmed the lack of energy transfer between the host and dopant.Possible explanations for this behavior have been put forth and substantiated by the first-principles electronic structure calculations in the framework of hybrid density functional theory.
