BLUE LIGHT EMISSION FROM STRESS-ACTIVATED SR2MGSI2O7:EU

摘要：

We discovered that Sr2MgSi2O7:Eu phosphor emits blue light under the application of a mechanical stress, a phenomenon known as mechanoluminescence (ML). The ML showed a similar spectrum as photoluminescence (PL), which indicated that ML is emitted from the same center of Eu2+ ions as PL. The analysis of structure and thermolumincscne suggested that the origin of ML for Sr2MgSi2O7:Eu phosphor can be attributed to strain-induced electroluminescence, that is, piezoelectricity impelled the trapped electrons to escape from the trap and produce ML. Furthermore, the relation between ML intensity and compressive load is close to linearity, which indicate that this sample can be used for smart-skin and self-diagnosis applications.

关键词： Mechanoluminescence sensor thermoluminescence solid state synthesis

作者: HONGWU ZHANG NAO TERASAKI HIROSHI YAMADA CHAO-NAN XU

作者单位: National Institute of Advanced Industrial Science and Technology (AIST), Kyushu, Shuku807-I, Tosu, S National Institute of Advanced Industrial Science and Technology (AIST), Kyushu, Shuku807-l, Tosu, S

会议类型: 国际会议

会议名称: 第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)

会议地点: 哈尔滨

会议语种:英文

页码: 1028-1033

在线出版日期: 2008-09-03（万方平台首次上网日期，不代表论文的发表时间）