Temporal and Temperature Dependence of the Energy Transfer Process among Eu(3+) in an Amorphous Solid.
Abstract
The time dependence of the 5DO-7FO excitation energy transfer between Eu3+ ions in different sites within the inhomogeneous profile for 30 mole percent Eu3+ in Ca (PO3)2 glass is studied at different temperatures. Fluorescence laser narrowing techniques are used and the decay curve of the resonant (donor) fluorescence was analyzed. The temporal fit to the Inokuti-Hirayama equation shows that while dipole-dipole, dipole-quadrupole-quadrupole mechanisms may describe the transfer at short time, the dipole-dipole mechanism describes the transfer at short time, the dipole-dipole mechanism describes the transfer until approx. 90% of the excitation has been transferred. Only after 95% of the excitation is transferred in the concentrated samples and at T greater than or equal to 298 K was a fit to diffusion type behavior observed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 20, 1981
- Accession Number
- ADA107951
Entities
People
- Jack R. Morgan
- Mostafa El-Sayed
Organizations
- University of California, Los Angeles