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Preparation and characterization of long persistence strontium aluminate phosphor |
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| Authors: | Sang-Do Han Tai-Yeon Cho Devender Jakhar Chi-Hwan Han Il-Su Chun |
| Institution: | a Electrical and Electronic Materials Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong, Daejeon 305-343, Republic of Korea b Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, Haryana, India c Department of BioNano Technology, Gachon BioNano Research Institute, Kyungwon University, Seongnam, Gyeonggi 461-701, Republic of Korea |
| Abstract: | Long afterglow green phosphor SrAl2O4:Eu2+,Dy3+ is synthesized by a solid-state reaction method at 1350 °C under mild reducing atmosphere of activated carbon. The effects of B2O3 flux on the sintering dynamic process and the optimum concentrations of Eu2+ and Dy3+ for long-lasting bright luminescence property have been investigated. The effect of a small amount of charge compensators like Mg2+, Zn2+, Na+, and K+ on long persistence has also been studied. TG/DTA, SEM, and XRD have been used to characterize the synthesized phosphor. |
| Keywords: | 78 55 &minus m |
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