PHOSPHORESCENCE MECHANISM IN CDF2 - EU3+

被引：12

作者：

BANKS, E

SCHWARTZ, RW

机构：

[1] Department of Chemistry, Polytechnic Institute of Brooklyn, Brooklyn

[2] Department of Chemistry, University of Illinois, Chicago, IL

来源：

JOURNAL OF CHEMICAL PHYSICS | 1969年 / 51卷 / 05期

关键词：

D O I：

10.1063/1.1672284

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single crystals of CdF2, doped with Eu3+, were grown by the Bridgman method, and shown by fluorescence and absorption spectra to contain no detectable Eu2+, irrespective of the presence of Na + or Y3+ as added impurities. Ultraviolet irradiation at 77°K produced a new broad absorption band near 3400 Å, which disappeared on warming, with associated thermoluminescence. A complex ESR signal associated with this band is attributed to Eu2+, formed during the irradiation. A mechanism proposed for the luminescence processes involves formation of Eu2+ in the excitation and trapping steps, with the luminescence of Eu3+ resulting from a resonance transfer of excitation energy from the recombination site.

引用

页码：1956 / &

共 10 条

[1] INTERPRETATION OF OPTICAL SPECTRUM OF YB3+ IN CDF2 WITH AID OF ESR SPECTROSCOPY [J].