Document Type
Thesis
Date of Degree Completion
Spring 2010
Degree Name
Bachelor of Science
Department
Chemistry
Committee Chair
Dr. Anthony Diaz, Department of Chemistry
Second Committee Member
Dr. Dion Rivera, Department of Chemistry
Third Committee Member
Dr. Audrey D. Huerta, Director Science Honors Research Program
Abstract
The optical properties of gadolinium and europium doped samples of yttrium borate were assessed to determine a quantitative value for the host-to-activator energy transfer efficiency under VUV excitation. Emission, excitation, and reflectance data were collected through VUV spectroscopy. A plot of the energy transfer versus europium concentration was used to illustrate the behavior of the system with increasing amounts of europium. a/B ratios for each gadolinium concentration were calculated from trends given by the inverse energy transfer plot. These values show that with an increase of gadolinium in the crystal lattice, the a/B ratio increases. This indicates that there is a higher electron mobility resulting from a greater quantity of e-h pairs locating a europium site compared to a killer site when there is gadolinium is incorporated into the lattice.
Recommended Citation
Rabinovitz, Rosa Lea, "Investigating the Function of GD³ + IN (Y,GD)BO₃:EU³⁺ Through Transfer Efficiency Measurements" (2010). Undergraduate Honors Theses. 99.
https://digitalcommons.cwu.edu/undergrad_hontheses/99
Comments
This thesis has been digitized and made available as part of the University’s ongoing preservation and access initiatives. Copyright is retained by the original author. The University has made a good faith effort to review this work for copyright and privacy concerns prior to digitization. If you are the author or a rights holder and have questions, concerns or wish to request removal, please contact ScholarWorks@cwu.edu.