Analysis of Er3+ incorporation in SnO2 by optical investigation

• Main Author: Morais, Evandro A. de [UNESP]
• Publication Date: 2006
• Other Authors: Scalvi, Luis V. A. [UNESP], Martins, Márcio R. [UNESP], Ribeiro, Sidney José Lima [UNESP]
• Format: Article
• Language: eng
• Source: Repositório Institucional da UNESP
• Download full: http://dx.doi.org/10.1590/S0103-97332006000300010; http://hdl.handle.net/11449/29749
• topic: Er3+ emission; SnO2; Photoluminescence spectra

Er3+ emission in the wide bandgap matrix SnO2 is observed either through a direct Er ion excitation process as well as by an indirect process, through energy transfer in samples codoped with Yb3+ ions. Electron-hole generation in the tin dioxide matrix is also used to promote rare-earth ion excitation. Photoluminescence spectra as function of temperature indicate a slight decrease in the emission intensity with temperature increase, yielding low activation energy, about 3.8meV, since the emission even at room temperature is rather considerable.