Photoluminescence of Eu2+-Doped Strontium Cyanamide: A Novel Host Lattice for Eu2+
Photoluminescence of Eu2+-Doped Strontium Cyanamide: A Novel Host Lattice for Eu2+
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Eu2 掺杂氰氨锶的光致发光：Eu2 的新型主晶格
DOI：
10.1111/j.1551-2916.2010.04025.x
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发表时间：
2010
影响因子：
3.9
通讯作者：
Guorong Chen
中科院分区：
文献类型：
--
作者：
S. Yuan;Yunxia Yang;F. Cheviré;F. Tessier;Xianghua Zhang;Guorong Chen
采用高温固相反应法在NH3气氛下制备了不同Eu 2+含量的SrCN 2。SrCN 2的反射光谱的能隙为4.56 eV。测量了不同温度下SrCN_2：Eu ~（2+）的光致发光光谱。结果表明，在77 K下，Eu 2+掺杂SrCN 2在350-520 nm激发下，具有610 nm的宽带发射。随着温度的升高，Eu 2+掺杂的SrCN 2的发光强度显著降低，说明Eu 2+掺杂的SrCN 2具有较低的猝灭温度。
Eu2+-doped SrCN2 with different Eu2+ contents were prepared by a high-temperature solid-state reaction under NH3 atmosphere. SrCN2 has an energy gap of 4.56 eV by the reflection spectra. The photoluminescence spectra of SrCN2:Eu2+ at different temperatures were measured. The results show that Eu2+-doped SrCN2 shows a broad band emission with a peak at 610 nm when it is excited by 350-520 nm at 77 K. With the temperature increasing, the emission intensity decreases remarkably, indicating that Eu2+-doped SrCN2 has a low quenching temperature.