Experimental and theoretical correlation of very intense visible green photoluminescence in BaZrO3 powders
Very intense visible green photoluminescence PL was observed at room temperature in structurally ordered-disordered BaZrO3 powders. Ab initio calculations, ultraviolet-visible absorption spectroscopy, electron paramagnetic resonance, and PL were performed. Theoretical and experimental results show...
Na minha lista:
Principais autores: | , , , , , , , , , |
---|---|
Formato: | article |
Idioma: | English |
Publicado em: |
American Institute of Physics
|
Assuntos: | |
Endereço do item: | https://repositorio.ufrn.br/handle/123456789/32190 |
Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
Resumo: | Very intense visible green photoluminescence PL was observed at room temperature in structurally ordered-disordered BaZrO3 powders. Ab initio calculations, ultraviolet-visible absorption spectroscopy, electron paramagnetic resonance, and PL were performed. Theoretical and experimental results showed that local defects in the cubic structure caused by ZrO5 ·VO z complex clusters, where VO z =VO x , VO • , and VO
••, play an important role in the formation of hole-electron pairs, giving rise to a charge gradient in the structure which is responsible for PL emission |
---|