Details

Autor(en) / Beteiligte

• Wan, Neng
• Xu, Jun
• Lin, Tao
• Zhang, Xiangao
• Xu, Ling

Titel

Energy transfer and enhanced luminescence in metal oxide nanoparticle and rare earth codoped silica

Ist Teil von

• Applied physics letters, 2008-05, Vol.92 (20), p.201109-201109-3

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2008

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A significant enhancement of photoluminescence from Eu 3 + embedded in Si O 2 matrix is observed by codoping with wide band-gap In 2 O 3 nanoparticles. The enhanced photoluminescence characteristics are strongly influenced by the postannealing temperature and the In 3 + concentration. Synchronous scanning photoluminescence technique was used to understand the excitation and luminescence behavior in codoped silica films. Based on the experimental results, we argue that the enhancement of photoluminescence is associated with the effective energy transfer process from In 2 O 3 nanoparticles to the charge transfer band of O 2 + - Eu 3 + instead of the direct transfer to the rare-earth energy levels.