| Autor: |
Djidjeli, C., Chelouche, A., Touam, T., Manseri, A., Ouhenia, S., Souici, A. H., Djouadi, D. |
| Zdroj: |
Journal of Materials Science: Materials in Electronics; Sep2023, Vol. 34 Issue 25, p1-12, 12p |
| Abstrakt: |
In this work, we discuss the effects of Ag nanoparticles (AgNPs) on the structural, morphological, electrical, and optical properties of ZnO and Al-doped ZnO (AZO) sol–gel thin films deposited by the dip coating method. X-ray diffraction (XRD) shows that all the samples possess a würtzite hexagonal structure with a c-axis preferential orientation. AgNps improves the crystal quality of ZnO and AZO. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) demonstrated a homogenous grain distribution and smooth surface of all films. UV–Visible spectroscopy revealed a high transparency in the visible range of the samples. The incorporation of AgNPs increases the average transmittance of AZO films by over 90% and the energy gap up to 3.288 eV. Photoluminescence (PL) and Hall effect measurements showed that AgNPs enhances the defect density of both ZnO and AZO films and improves their electrical properties. The AZO/AgNPs film exhibits, in particular, high charge carriers, lower resistivity and maximum figure of merit. The presence of Ag NPs enhances the figure of merit from 2 × 10 - 9 to 4 × 10 - 7 in ZnO films and from 3 × 10 - 5 Ω - 1 in AZO films. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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