Intense ultraviolet emission from needle-like WO(3 )nanostructures synthesized by noncatalytic thermal evaporation

Photoluminescence measurements showed that needle-like tungsten oxide nanostructures synthesized at 590°C to 750°C by the thermal evaporation of WO(3 )nanopowders without the use of a catalyst had an intense near-ultraviolet (NUV) emission band that was different from that of the tungsten oxide nano...

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Detalles Bibliográficos
Autores principales: Park, Sunghoon, Kim, Hyunsu, Jin, Changhyun, Lee, Chongmu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2011
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3211871/
https://www.ncbi.nlm.nih.gov/pubmed/21752275
http://dx.doi.org/10.1186/1556-276X-6-451
Descripción
Sumario:Photoluminescence measurements showed that needle-like tungsten oxide nanostructures synthesized at 590°C to 750°C by the thermal evaporation of WO(3 )nanopowders without the use of a catalyst had an intense near-ultraviolet (NUV) emission band that was different from that of the tungsten oxide nanostructures obtained in other temperature ranges. The intense NUV emission might be due to the localized states associated with oxygen vacancies and surface states.

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