THE LUMINESCENCE OF EUROPIUM IN STRONTIUM BORATES

被引：48

作者：

SCHIPPER, WJ

VANDERVOORT, D

VANDENBERG, P

VROON, ZAEP

BLASSE, G

机构：

[1] Debye Research Institute, University of Utrecht, P.O. Box 80.000

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1993年 / 33卷 / 3-4期

关键词：

D O I：

10.1016/0254-0584(93)90080-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

At 300 K the Eu2+ ion luminesces efficiently in SrB4O7, and to a lesser extent in SrB6O10 and Sr3B2O6. In the last compound the lowest 4f-5d absorption band is at extremely low energy for Eu2+. Due to this and a large Stokes shift, the EU2+ emission band has its maximum at 590 nm. From a comparison with the luminescence of Ce3+ and Pb2+ in this lattice it is concluded that a strong non-cubic crystal field splits the 5d excited state, causing the lowest f-d absorption transition to be at a low energy position. In SrB2O4 and Sr2B2O5 only Eu3+ was found. An explanation for this is proposed on the basis of a charge-compensation mechanism for Eu3+; the luminescence of this ion is discussed as well.

引用

页码：311 / 317

页数：7

共 31 条

[1] LUMINESCENCE AND VIBRATIONAL STRUCTURE OF THE LUMINOPHORS CAS-CE3+ AND CASE-CE3+ [J].