高压合成的硼酸锶掺Eu2+离子发光特性的研究

The Luminescence Characters of High-Pressure Synthesized Europium (2)－Activated Strontium of Borate

Group of Rare Earth Solid State Physics, Jilin University, Changchun 130023, China

摘要: 本文首次采用高压方法合成了Sr3B2O6:Eu2+、Sr2B2O5:Eu2+、SrB4O7:Eu2+一系列硼酸盐，研究了它们和SrB2O4:Eu2+的常压与高压合成产物的发光光谱、强度及效率的变化，以及发光与其结构的关系。由于硼酸盐在高压处理后，结构发生变化，因而光谱及发光强度均有所改变。尤其对SrB2O4:Eu2+，在适当的合成压力条件及一定的激光条件下，其量子发光效率比常压提高80倍以上。
- 硼酸锶铕 /
- 高压合成 /
- 结构变化 /
- 量子发光效率
Abstract: Sr3B2O6:Eu2+, Sr2B2O5:Eu2+ and SrB4O7:Eu2+ were synthesized by the high-pressure method for the first time, and luminescence measurements of them and SrB2O4:Eu2+ were carried out. The luminescence characters were compared with those under atmosphere. The structures and emission bands of Sr3B2O6:Eu2+ and Sr2B2O5:Eu2+ have been changed due to the high pressure processing. Under an appropriate pressure (2.8 GPa) the emission intensity of SrB2O4:Eu2+ drastically increased. Its quantum efficency at the optinium excitation 313 nm is above 80 times higher than the previous one.
- europium(2)-activated strotium of borate /
- high-pressure synthesis /
- structural modification /
- quantum efficency