2024-03-29T11:32:50Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2030412020-12-13T00:01:08Zcom_10261_36com_10261_4col_10261_289
Physical properties investigation and gas sensing mechanism of Al: Fe2O3 thin films deposited by spray pyrolysis
Ben Ayed, Rihab
Ajili, Mejda
García Martínez, Jorge Manuel
Labidi, Ahmed
Turki, Najoua Kamoun
Iron oxide
Spray pyrolysis
Aluminum doping
Physical properties
Gas sensing
We present the successful synthesis and characterization of pure and Al: Fe2O3 thin films prepared by spray pyrolysis. The XRD analysis showed a rhomboedric structure with (104) as a preferential orientation for all the layers. AFM and SEM observations exhibited a dense surface with grains uniformly distributed. Optical measurements demonstrated that Al: Fe2O3 (y = 6 and 8 at. %) were highly transparent. In addition, the band gaps values found in the range from 1.98 to 2.17 eV. Hall Effect measurements indicated an n-type conductivity with the lowest resistivity of 2.68 x 102 Ω.cm which reached for the 8 at. % Al: Fe2O3 thin films. Moreover, Al: Fe2O3 thin film based sensor demonstrated a good response to a small amount of ethanol vapor with the adequate response and recovery period at a low operating temperature equal to 250 °C.
2020-03-06T11:41:28Z
2020-03-06T11:41:28Z
2019-05
2020-03-06T11:41:28Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1016/j.spmi.2019.03.002
issn: 1096-3677
Superlattices and Microstructures 129: 91-104 (2019)
http://hdl.handle.net/10261/203041
10.1016/j.spmi.2019.03.002
http://dx.doi.org/10.1016/j.spmi.2019.03.002
Sí
none
Elsevier BV