White-Light Generation in Sr2SiO4 : Eu2 + , Ce3 + under Near-UV Excitation A Novel Phosphor for Solid-State Lighting
作者： N. Lakshminarasimhan , U. V. Varadaraju
DOI: 10.1149/1.1997169
关键词:
摘要: White-light emission is generated by combining blue and green to yellow emissions of Ce 3 + Eu 2 , respectively, in a single host lattice Sr SiO 4 . The excitation the near-UV region (350-370 nm). role concentration on photoluminescence intensity - x [x = 0.0025, 0.005, 0.0075, 0.01] studied, it found that critical 0.0025 mol. Energy migration over sites occurs, resulting quenching. exhibits high absorption region. transfer from occurs :Eu Optimization produce white light 1 9 8 0 Li shows optimum concentrations are 0.01 mols, respectively. Partial energy responsible for white-light generation. results reveal an efficient "single phosphor" solid-state lighting technology using UV light-emitting diode (LED) generate light.
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