Applied Physics Letters · 1999 · 32 citations · 1 references
Natural SciencesMaterials EngineeringMaterials ScienceElectronic MaterialsOptical MaterialsSpectroscopyEmission SpectroscopyLuminescent MaterialsOptical Properties Of MaterialsOptical Properties Of SolidsOptical SpectroscopyPhosphorescence SpectroscopyElectroluminescent MaterialsEmission Spectra AnalysisOptical Emission SpectroscopyOptical PropertiesPhosphor MaterialsPhosphorescent MaterialsPhosphorsSensitization
The luminescence characteristics of a two-component electroluminescent (EL) phosphor, SrS:Cu,Ag, were investigated by optical spectroscopy. Motivated by the discovery of efficient EL from SrS:Cu, SrS:Ag was investigated but exhibited poor EL emission, even though it showed a superior blue color. Thus, SrS:Cu,Ag samples were prepared in order to investigate if the Ag luminescence could be sensitized to produce a more efficient and saturated blue EL phosphor. A detailed spectroscopic study on SrS:Cu,Ag revealed that the emission characteristics of SrS:Cu,Ag were identical to SrS:Ag, whereas the excitation spectra resembled SrS:Cu. These results demonstrated the efficient energy transfer from Cu to Ag, confirming the successful sensitization.
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