A novel orange emitting Sm3+ ions doped NaCaAlPO4F3 phosphor: Optical and luminescence properties

作者：Nagaraja R; Manjari V Pushpa; Sailaja B; Ravikumar R V S S N

来源：Journal of Molecular Structure, 2017, 1130: 96-102.

DOI：10.1016/j.molstruc.2016.10.004

• Phosphor
• Cell parameters
• Optical absorption
• Judd-Ofelt analysis
• CIE coordinates
• Photoluminescence

A novel orange light emitting Sm3+ ions doped NaCaAlPO4F3 phosphor was synthesized via solid state reaction. The prepared sample was characterized by powder X-ray diffraction (PXRD), Optical absorption, Photoluminescence (PL) and Fourier Transform Infrared Spectroscopy (FT-IR) techniques. From powder XRD data, the average crystallite size and structural parameters are estimated. Absorption spectra consist of ten absorption peaks corresponding to the transitions from the H-6(5/2) ground state to various excited energy levels. Transition probabilities, branching ratios and radiative lifetime were evaluated by using Judd-Ofelt analysis. Photoluminescence spectrum show three prominent emission bands centered at 562, 597 and 643 nm corresponding to the (4)G(5/2) -> H-6(J) (J = 5/2, 7/2 and 9/2) transitions respectively. From the emission transitions, stimulated emission cross-section ((re) and gain bandwidth (GBW) were predicted. The decay profiles of the prepared phosphor reveals the single exponential nature and the experimental lifetime is calculated. The colorimetric parameters CIE coordinates, Correlated color temperature of the prepared phosphor are also evaluated. FT-IR spectrum demonstrates the characteristic vibration bands of the prepared phosphor material.

• 出版日期2017-2-15