Observation of a Te4+ center with broad red emission band and high fluorescence quantumm [i. e. quantum] efficiency in TeO2-Li2O glass - Costa, Francine Bettio; Souza, Ana Kely R.; Silva, Junior Reis; Moraes, João Carlos Silos; Nunes, Luiz Antônio de Oliveira; Andrade, Luis H. C.; Lima, Sandro Marcio (Brazilian MRS Meeting, 2019)