Date of Award
2020
Document Type
Thesis
Degree Name
Bachelors
Department
Natural Sciences
First Advisor
Black, Rebecca
Area of Concentration
Chemistry
Abstract
Divalent europium has many modern uses as a phosphor in applications such as plasma displays and light-emitting diodes. In this work, the isostructural nature of Eu2+ and Sr2+ was utilized to synthesize Eu2+-doped strontium borates of the composition (Sr1-xEux)[B8O11(OH)4] where x ranged from 0.0198 to 1.0, and the luminescent properties of the resulting materials were measured. The stable divalent europium borate compounds were prepared via a reductive environment method using concentrated HI to generate H2 gas in situ. This method does not require anaerobic conditions, which allows for ease of synthesis on the benchtop and air- and water-stable product compounds. Elemental Analysis by Energy-Dispersive X-ray Spectroscopy of several samples showed minor inconsistencies in the Eu(II)-doping levels, but the average Eu(II)% in the samples usually correlate with the quantum yield trend. A sample with 3.12% average Eu(II) composition showed the highest quantum yield (93%, nearing unity), which is outstanding for a Eu(II) complex.
Recommended Citation
Bottorff, William, "PHOTOLUMINESCENT QUANTUM YIELD OF A EU2+-DOPED SR2+ BORATE SYSTEM" (2020). Theses & ETDs. 5909.
https://digitalcommons.ncf.edu/theses_etds/5909