Glass Reflections
Cambridge 7th to 9th September

Presenting Author:
Benjamin Allsopp

article posted 9 Mar 2015

Benjamin Allsopp

I am currently in my first year of my PhD, supervised by Dr Paul Bingham, at Sheffield Hallam University. The project consists of development of new glass compositions with enhanced optical, chemical and mechanical properties for the PV module industry. Ionic doping with controlled heat treatments to form optical conversion centres will be the major focus of my research. I graduated the University of Huddersfield with first class honours in an MChem degree in 2014. I have undertaken research in photochromic 2H-pyrans with Vivimed Labs Europe, and synthesis of lead phosphate crystals with Yorkshire Water.

The effects of Bi2O3 doping on the optical properties and structure of
soda lime silica glasses for photovoltaic applications

Benjamin Allsopp
Paul Bingham Materials and Engineering Research Institute,
Sheffield Hallam University,
City Campus, Howard Street, Sheffield, S1 1EB

Low doping concentrations of Bi2O3 in Na2O-SiO2-CaO glasses were prepared by a melt quenching technique. Such a material may be suitable material for photovoltaic applications. Bismuth in glass has been demonstrated to fluoresce under excitation from UV light to give visible emission. Initial analyses using UV-Vis-NIR optical absorption spectroscopy and fluorescence spectroscopy, in conjunction with FT-IR and Raman spectroscopy, XRF and XRD, have been used to investigate the optical and structural properties of the glasses as a function of bismuth content. Initial results will be presented here.