Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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The optical properties dependent on different doping concentrations of activators Cu2+ and in ZnS:Mn,Cu,Cl phosphor

활성제 Cu2+ 및 도핑농도에 따른 ZnS:Mn,Cu,Cl 형광체의 광학적 특성

  • Published : 2006.09.30
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Abstract

Manganese, copper and chlorine-doped ZnS phosphors (ZnS:Mn,Cu,Cl) were synthesized through solid-state reaction. Manganese was added in the range of amount $1.4{\sim}5.3$ mol % to ZnS phosphors containing 0.2 or 1.0 mol % of copper and a small amount of chlorine. As-synthesized phosphors showed a spherical morphology with a mean size of ${\sim}20\;{\mu}m$ and structural properties of Wurtzite, which were identified by SEM and XRD, respectively. Optical properties of ZnS:Mn,Cu,Cl synthesized with various concentrations of activators were analysed by both of PL and EL spectra. Samples mainly showing only 580 nm-orange emission by 380 nm-UV excitation gave different EL spectra of blue, green, and orange emissions at 450, 480 and 580 nm, respectively, depending on concentrations of $Cu^{2+}$ and $Mn^{2+}$.

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