Effect of Increasing Concentrations on Sprayed Cu2ZnSnS4 Thin Films
| Authors | N. Sebaa1, M. Adnane1 , A. Djelloul1,3, , A. Abderrahmane1,2, T. Sahraoui1 |
| Affiliations |
1Département de Technologie des Matériaux, Faculté de Physique, Université des Sciences et de la Technologie d’Oran Mohamed Boudiaf USTO-MB, BP 1505, El M'naouer, 31000 Oran, Algérie 2Centre de développement des technologies avancées (CDTA), cité 20 Aout 1956 Baba Hassen, Alger, Algérie 3Centre de Recherche en Technologie des Semi-Conducteurs pour l’Energétique ‘CRTSE’ 02 Bd Frantz Fanon, BP: 140, 7 Merveilles, Alger, Algérie |
| Е-mail | djelloulcrtse@gmail.com |
| Issue | Volume 11, Year 2019, Number 5 |
| Dates | Received 23 June 2019; revised manuscript received 20 October 2019; published online 25 October 2019 |
| Citation | N. Sebaa, M. Adnane, A. Djelloul, et al., J. Nano- Electron. Phys. 11 No 5, 05009 (2019) |
| DOI | https://doi.org/10.21272/jnep.11(5).05009 |
| PACS Number(s) | 61.46; 81.15.Rs; 61.05.Cp; 78.66.–Hf; 68.37.Ps; 33.20.Fb |
| Keywords | Cu2ZnSnS4, Spray pyrolysis deposition, XRD (95) , UV-visible, AFM (18) , Raman (37) . |
| Annotation |
Spray pyrolysis is a simple and low cost technique used for large thin films fabrication. In this paper, we reported the preparation of Cu2ZnSnS4 (CZTS) thin films with spray pyrolysis on glass substrates using different aqueous solutions. So, we chose to vary anions (S) and cations (Cu, Zn, Sn) concentrations. The purpose of this choice is the EDX analysis so that the percentage of copper is closer to 25 %; on the other hand, zinc and tin are around 12.5 % and sulfur at 50 %. The structural, chemical composition, morphological and optical properties of CZTS thin films were investigated using X-ray diffraction (XRD) and Raman spectroscopy, energy dispersive X-ray analysis (EDAX), scanning electron microscopy (SEM) and atomic force microscopy (AFM), and UV-visible spectroscopy analysis, respectively. The X-ray diffraction showed the formation of kesterite structure with dominant peaks along (112), (220) and (312) directions. Raman spectroscopy confirmed the existence of internal compressive stress in the CZTS thin films. The EDX analysis showed a better stoichiometry when optimizing the precursor concentrations. CZTS thin films showed low optical transmission and optical absorbance higher than 5×104m–1, which make the CZTS thin films prepared by spray pyrolysis technique suitable for CZTS solar cells. |
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List of References |
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