title: A yellow-emitting phosphor of Mn(2+)-doped Na2CaP2O7.
abstract: A yellow-emitting Na2CaP2O7:Mn(2+)phosphors have been synthesized by solid state reaction. The crystal structure, photoluminescence properties as well as concentration quenching mechanism have been investigated. The (4)T1-(6)A1 emission of Mn(2+)in Na2CaP2O7 phosphor ranges from 500 to 650 nm and exhibits a red shift while increasing the Mn(2+)concentration. The crystal field strength is calculated based on the combination of excitation spectrum and Tanabe-Sugano diagram. The chromaticity coordinates of Na2CaP2O7:Eu(2+), Mn(2+)phosphors were discussed in order to develop the potential application in white light-emitting diodes (LEDs).
authors: State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, PR China; School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, PR China.
authors: F
authors: F
authors: Xiao
authors: State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, PR China.
authors: E H
authors: EH
authors: Song
authors: State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, PR China. Electronic address: qyzhang@scut.edu.cn.
authors: Q Y
authors: QY
authors: Zhang
mesh_terms: D002118:Calcium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D012964:Sodium / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014961:X-Ray Diffraction
chemical_list: D049408:Luminescent Agents; D010087:Oxides; D010758:Phosphorus; D008345:Manganese; D012964:Sodium; D002118:Calcium
keywords: Concentration quenching; Critical distance; Phosphor; Tanabe–Sugano diagram