UNIDEF   23986
UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICO PARA LA DEFENSA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Porosity characterization of ZnO and ZnO:Al thin films
Autor/es:
BOJORGE C. D. ; HEREDIA E. A.; CASANOVA J. R.; KELLERMANN G.; CÁNEPA H.R.; CRAIEVICH A.; MAROTTI R.E.
Lugar:
Ciudad Autónoma de Buenos Aires
Reunión:
Congreso; IMCS 15th International Meeting on Chemical Sensors; 2014
Institución organizadora:
CONEA (CAC)
Resumen:
The sensitivity and response time of ZnO based sensors strongly depend on the porosity of the material: these pores are considered to play a vital role in the process of gas adsorption as the response of such sensors is based on chemisorptions. In the present work, pure and Al-doped ZnO thin films are synthesized by using sol-gel method and depositing by spin-coating technique upon silica substrates. Samples were characterized by XR a GISAXS using synchrotron radiation. GISAXS diagrams were analyzed using IsGISAXS software, determining the size and shape of the pores. Porosity values determined from the average density by XR and GISAXS techniques and were compared with those obtained by transmittance measurements.