A Comparative Study on the Optoelectronic Performance of Undoped, Mg-doped and F/Mg Co-doped ZnO Nanocrystalline Thin Films
| Authors | Warda Darenfad1, Noubeil Guermat1,2, Kamel Mirouh1 |
| Affiliations |
1Thin Films and Interfaces Laboratory (LCMI), University of Brothers Mentouri of Constantine 1, 25000 Constantine, Algeria 2Department of Electronics, Faculty of Technology, University Mohamed Boudiaf of M’sila, 28000 M’sila, Algeria |
| Е-mail | daranfed.warda@umc.edu.dz |
| Issue | Volume 13, Year 2021, Number 6 |
| Dates | Received 03 October 2021; revised manuscript received 02 December 2021; published online 20 December 2021 |
| Citation | Warda Darenfad, Noubeil Guermat, Kamel Mirouh, J. Nano- Electron. Phys. 13 No 6, 06016 (2021) |
| DOI | https://doi.org/10.21272/jnep.13(6).06016 |
| PACS Number(s) | 82.70.Uv, 82.30.Lp |
| Keywords | Thin films (60) , F/Mg co-doped ZnO, Spray pyrolysis (9) , Contact angle (2) , Hydrophobic (4) , Hydrophilic. |
| Annotation |
This work reports on the development and characterization of Zinc Oxide (ZnO) nanocrystalline thin films deposited on glass substrates by spray pyrolysis method. The effect of 1 % Mg-doping and 6 % F/x % Mg co-doping (x = 1, 2 and 3) on the structural, morphological, optical and electrical properties of the films obtained is studied. The structural characterization shows that all the deposited layers are polycrystalline with a hexagonal wurtzite-type structure due to the existence of a more intense peak relative to the (002) peak, located around an angle of 34.13° with no other phase detected. The measured contact angles are more than 90° for pure, doped and 6 % F/1 % Mg co-doped films prepared, which confirms the hydrophobic character, while other co-doped films (6 % F:2 % Mg and 6 % F:3 % Mg) show the hydrophilic character at values of the contact angle < 90°. A higher transmittance value of 86.47 %, a wide band gap of 3.53 eV and lower disorder (330.03 meV) are observed for the 6 % F:1 % Mg co-doped film. Co-doping with 1 % Mg considerably improves the electrical conductivity (σ = 0.030 (Ω.cm) – 1). The results suggest that the co-doped ZnO film (6 % F, 1 % Mg) can be used as a window film in thin film solar cells. |
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List of References |
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