- Tytuł:
- Samarium-Doped Ceria Nanostructured Thin Films Grown on FTO Glass by Electrodepostion
- Autorzy:
-
Živković, Lj.
Lair, V.
Lupan, O.
Cassir, M.
Ringuedé, A. - Powiązania:
- https://bibliotekanauki.pl/articles/1503528.pdf
- Data publikacji:
- 2011-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
81.15.Pq
68.55.Ln
61.46.Km
78.67.-n - Opis:
- Electrical, optical or catalytic properties of ceria can be tuned via doping by rare earth elements. The innate properties of ceria-based materials can be further amplified by using nanostructured ceria. In this study, Sm-doped ceria (SDC) coatings were grown on the FTO glass substrate by means of cathodic deposition. Films were obtained from mixed $Sm^{3+}//Ce^{3+}$ aqueous nitrate solutions, applying -0.8V/(SCE) potential for 1 h. Selected conditions gave rise to adherent, homogeneous and well-covering nanostructured SDC thin films. EDX analysis showed that 0.8 and 1.5 mol% $Sm^{3+}$ led to 3.4 and 6.3 at.% Sm in the SDC films. XRD and Raman analysis confirmed the formation of cubic fluorite-type $CeO_{2}$. However, Sm-doping decreased the crystallite size of nanostructured ceria. The effect of annealing on SDC film was also studied. An improvement in crystallite quality was found with increasing temperature. Optical absorption properties were studied and the band gap value $(E_g)$ of 3.07 eV was determined for pure ceria. Sm-doped ceria exhibited a red shifting. The $E_g$ values were 2.97 and 2.81 eV, in due order.
- Źródło:
-
Acta Physica Polonica A; 2011, 120, 2; 298-302
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł