Glass photonics meets photovoltaics: general principles and a case study Francis Otieno, Mildred Airo, Alex Quandt, Daniel Wamwangi and Rudolph M. Erasmus Eur. Phys. J. Plus, 138 12 (2023) 1102 Published online: 12 December 2023 DOI: 10.1140/epjp/s13360-023-04714-7