Studies of the Yb3+ and Er3+ doping on tellurium glasses for photovoltaic application

P.R. Prezas, M.P.F. Graça, M.J. Soares, M.A. Valente, P. Bragiel, M. Piasecki, II International Conference on Applications of Optics and Photonics, AOP 2014, 26-30 May, Aveiro, Portugal