Effect of CaCN2 on the preparation of CaAlSiN3:Eu2+ phosphors |
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| Authors: | Lin‐Jiu Xiao Yan Lv Ying Xie Jian Su Xin‐Dong Jiang Ming‐rui He |
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| Affiliation: | College of Applied Chemistry. Key Laboratory of Rare‐earth Chemistry and Applying of Liaoning Province, Shenyang University of Chemical Technology, Shenyang, P. R. China |
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| Abstract: | Highly efficient red‐emitting phosphors, CaAlSiN3:Eu2+, were successfully prepared by the solid‐state method using calcium cyanide (CaCN2) as the single calcium source. The influences of crystallization temperature, crystallization time, calcination mode and compounds ratio on the photoluminescent properties were investigated. The CaAlSiN3:Eu2+ phosphors were obtained with 1 mol% CaCN2 by a two‐step calcination procedure at 900°C for 2 h and subsequently at 1600°C for 8 h. The CaAlSiN3:Eu2+ phosphors showed the strongest luminescent intensity at 660 nm when excited by 468 nm. With an increase in crystallization time, the maximum wavelength of the emission was shifted from 644 nm to 660 nm. |
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| Keywords: | CaAlSiN3:Eu2+ calcium source photoluminescent properties solid‐state method |
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