Abstract
This project proposes to investigate the vitreous system SiO2-GeO2-(Al2O3, Nb2O5)-K2O co-doped with Yb3+: Er3+, Ce3+ and Nd3+. For photovoltaic device, the refractive index needs to be as low as possible to avoid high reflection on the glass surface, therefore, this parameter must be as low as possible. Moreover, the composition must be adjusted to allow high transparency and stability, w…