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Rare Earths in Sol-Gel Glasses Daniel M. Boye, Davidson College, DMR 0959552

Rare Earths in Sol-Gel Glasses Daniel M. Boye, Davidson College, DMR 0959552. Post Annealing Immersion New technique for studying pore network Fluorescent ions introduced into porous network via solutions, varying dopants and concentrations

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Rare Earths in Sol-Gel Glasses Daniel M. Boye, Davidson College, DMR 0959552

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  1. Rare Earths in Sol-Gel GlassesDaniel M. Boye, Davidson College, DMR 0959552 • Post Annealing Immersion • New technique for studying pore network • Fluorescent ions introduced into porous network via solutions, varying dopants and concentrations • Energy transfer between different dopants monitored to determine proximity • Aluminum Co-doping • Al co-doping can significantly increase emission yield independent of Rare Earth ion used • Continuing work in our group to study mechanism • Monitor emission of Tb3+ green emission when excited through its 4f84f75d transition which is more sensitive to host coupling compared to 4f84f8 transitions • Decreasing emission with increasing Al concentration indicates weaker coupling to host one dopant in original sample re-anneal immersion 4f84f75d transition 542nm emission Wavelength (nm) Tb3+ emission result of energy transfer from excited Gd3+ ions

  2. Rare Earths in Sol-Gel GlassesDaniel M. Boye, Davidson College, DMR 0959552 Co-PIs Hamilton College: Ann Silversmith, Physics Whitman College: Kurt Hoffman, Physics Undergraduate Research Participants Hamilton College: Sarah Fobes, Zane Glauber, Kate Arpino, Andrew Beyler Davidson College: Lindsey Martin, Patrick Panuski (high school student) Whitman College: Dylan Wenzlau, Genderzon Montejo, Freddy Sanchez, Tyler Harvey Kate Arpino 2nd Place Poster Award at DPC’10 !!! • Professional Communication • 1 article published • 1 article accepted for publication • 2 articles submitted for review • 3 senior theses • 4 conference posters • 5 oral presentations • 6 attended 17th International Conference on Dynamical Processes in Excited States of Solids (DPC’10), ANL, Chicago New sample synthesis Curriculum Development Genderzon Montejoexamines aerogels from a new synthesis technique for our research efforts Lindsey Martinworks on new phosphor lifetime laboratory exercise

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