American Journal of Materials Synthesis and Processing
Volume 4, Issue 1, June 2019, Pages: 1-8
Received: May 26, 2019;
Accepted: Jun. 18, 2019;
Published: Jun. 27, 2019
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Salif Cisse, Department of Physics, Faculty of Science and Technology, University of Cheikh Anta DIOP, Dakar, Senegal
Maria Covei, Department of Renewable Energy and Recycling Systems, Faculty of Materials Science and Engineering, R&D Institute of the Transilvania, University of Brasov, Brasov, Romania
Jean Jude Domingo, Department of Physics, Faculty of Science and Technology, University of Cheikh Anta DIOP, Dakar, Senegal
Anca Duta, Department of Renewable Energy and Recycling Systems, Faculty of Materials Science and Engineering, R&D Institute of the Transilvania, University of Brasov, Brasov, Romania
Thin films of ZnO, CZTS (Cu2ZnSnS4) and ZnO-CZTS were prepared by spray pyrolysis deposition (SPD). After spraying a precursor solution of ZnO directly onto fluorine-doped tin oxide (FTO) substrats, CZTS thin layers were sprayed onto layers of ZnO to forme a p-n junction. Some CZTS layers were directly spray onto fluorine-doped tin oxide substrats. ZnO is a wide band gap n-type material, consisting of abundant and nontoxic elements, and is thus expected to be a good substitute for CdS buffer layer in solar cells. In this paper, we report the study of CZTS and ZnO thin films synthesized by chemical spray pyrolysis (CSP) method. During the deposition of the ZnO thin films on the FTO substrats the number of sequences was varied from 20 to 40. The influence of the ZnO on the structural, optical, morphological and electrical properties of CZTS films was studied using various techniques. The X-ray diffraction studies showed the formation of kesterite (Cu2ZnSnS4) phases with the peaks corresponding to (112), (220) and (312) planes. SEM study revealed a lack of uniformity of the surface of the CZTS layers sprayed onto the ZnO layers for a lower thickness of ZnO (FTO-ZnO20-CZTS). The band gap values of FTO-CZTS and FTO-ZnO-CZTS thin films were measured and found in the range 2.2 - 2.25 eV which are in good agreement with the results reported (2-2.2 eV). The morphological studies revealed the formation of some clusters randomly distributed on the film surface in the ZnO-containing layers, i.e. the FTO-ZnO20-CZTS and Finally, current-voltage measurements for different PV cells with maximum efficiency were carried out. A conversion efficiency (η) of 5.99% with fill factor (FF) = 18.8%, open circuit voltage (Voc) = 0.54 V, short circuit current density (Jsc) = 59 mA.cm2 were recorded through the FTO-ZnO40-CZTS thin film PV cell.
Jean Jude Domingo,
Thin-Film FTO-ZnO-CZTS Solar Cells Fully Deposited by Spray Pyrolysis, American Journal of Materials Synthesis and Processing.
Vol. 4, No. 1,
2019, pp. 1-8.
S. M. Bhosale, M. P. Suryawanshi, J. H. Kimb, A. V. Moholkar, «Influence of copper concentration on sprayed CZTS thin films deposited at high temperature», Ceramics International 41 (2015) 8299–8304.
C. H. Chung, B. Bob, B. Lei, S. H. Li, W. W. Hou, Y. Yang, «Hydrazine solution-processed Cu In (Se, S)2 thin film solar cells: secondary phases and grain structure», Sol. Energy Mater. Sol. Cells113 (2013)148–152.
H. Katagiri, K. Jimbo, W. S. Maw, K. Oishi, M. Yamazaki, H. Araki, A. Takeuchi, «Development of CZTS based thin film solar cells», Thin Solid Films517 (2009)2455–2460.
E. M. Mkawi, K. Ibrahim, M. K. M. Ali, A. S. Mohamed, « Dependence of copper concentration on the properties of Cu2ZnSnS4 thin films prepared by electrochemical method », Int. J. Electrochem. Sci.8 (2013)359–368.
Shockley W, Queisser HJ. «Detailed Balance Limit of Efficiency of p-n Junction Solar Cells». Jpn J Appl Phys 1961; 32: 510-519.
H. Katagiri, K. Jimbo, W. S. Maw, K. Oishi, M. Yamazaki, H. Araki, A. Takeuchi, «Development of CZTS-basedthin film solar cells», Thin Solid Films 517 (2009) 2455–2460.
T. Tanaka, D. Kawasaki, M. Nishio, Q. Guo, H. Ogawa, «Fabrication of Cu2ZnSnS4 thin films by co-evaporation», Phys. Status Solidi C3 (2006)2844–2847.
N. Moritake, Y. Fukui, M. O onuki, K. Tanaka, H. Uchiki, «Preparation of Cu2ZnSnS4 thin film solar cells under non-vacuum condition», Phys. Status Solidi C6 (2009)1233–1236.
Z. Zhou, Y. Wang, D. Xu, Y. Zhang, «Fabrication of Cu2ZnSnS4 screen printed layers for solar cells», Sol. Energy Mater. Sol. Cells94 (2010)2042–2045.
J. J. Scragg, P. J. Dale, L. M. Peter, G. Zoppi, I. Forbes, « New routes to sustainable photovoltaics: evaluation of Cu2ZnSnS4 as an alternative absorber material », Phys. Status Solidi B245 (2008)1772–1778.
K. Moriya, J. Watabe, K. Tanaka, H. Uchiki, «Characterization of Cu2ZnSnS4 thin films prepared by photo-chemical deposition», Phys. Status Solidi C3 (2006) 2848–2852.
Y. B. Kishore Kumar, G. Suresh Babu, P. UdayBhaskar, V. SundaraRaja, «Preparation and characterization of spray-deposited Cu2ZnSnS4 thin films», Sol. Energy Mater. Sol. Cells93 (2009)1230–1237.
O. Vigil-Galán, M. Espíndola-Rodríguez, M. Courel, X. Fontané, D. Sylla, V. Izquierdo-Roca, A. Fair brother, E. Saucedo, A. Pérez-Rodríguez, «Secondary phases dependence on composition ratio in sprayed Cu2ZnSnS4 thin films and its impact on the high power conversion efficiency», Sol. Energy Mater. Sol. Cells 117 (2013)246–250.
Maykel Courel, J. A. Andrade-Arvizu, A. Guillén-Cervantes, M. M. Nicolás-Marín, F. A. Pulgarín-Agudelo, O. Vigil-Galán, «Optimization of physical properties of spray-deposited Cu2ZnSnS4 thin films for solar cell applications», Materials and Design 114 (2017) 515–520
B. Shin, O. Gunawan, Y. Zhu, N. A. Bojarczuk, S. J. Chey, S. Guha, «Thin film solar cell with 8.4% power conversion efficiency using an earth-abundant Cu2ZnSnS4 absorber», Prog. Photovolt. Res. Appl. 21 (2013) 72.
A G Kannan, T E Manjulavalli, J Chandrasekaran, «Influence of solvent on the properties of CZTS nanoparticles», Procedia Engineering 141 (2016) 15–22.
Wujisiguleng Bao, Masaya Ichimura, Band Offsets at the ZnO/Cu2ZnSnS4 Interface Based on the First Principles Calculation. Japanese Journal of Applied Physics, 2013, 52, 061203-(1-5).
B. J. Lokhande, M. D. Uplane, «Structural, optical and electrical studies on spray deposited highly oriented ZnO films», Appl. Surf. Sci.167 (2000) 243–246.
E. Fortunato, P. Barquinha, A. Pimentel, L. Pereira, A. Gonc, alves, A. Marques, R. Martins, Wide-band gap high-mobility ZnO thin-film transistors produced at room temperature, Appl. Phys. Lett. 85 (2004) 2541–2543.
M. H. Valdés, M. Berruet, A. Goossens, M. Vázquez, Spray deposition of CuInS2 on electrodeposited ZnO for low-cost solar cells, Surf. Coat. Tech. 204(2010)3995–4000.
Y. Lare, M. Baneto, L. Cattin, M. Morsli, K. Jondo, K. Napo, J. C. Bernède, «Effect of a zinc oxide, at the cathode interface, on the efficiency of inverted organic photovoltaic cells based on theCuPc/C60couple», J. Mater. Sci.: Mater. Electron. 22 (2011) 365–370.
Mazabalo Baneto, Alexandru Enesca, Yendoubé Lare, Koffi Jondo, Kossi Napo, Anca Duta «Effect of precursor concentration on structural, morphological and opto-electric properties of ZnO thin films prepared by spray pyrolysis», Ceramics International 40 (2014)8397–8404.
Katagiri H, Jimbo K, Tahara M, Araki H, Oishi K. «The influence of the composition ratio on CZTS-based thin film solar cells». In: Materials research society symposium proceedings; 2009. p. M01–4.
Bwamba Jonah A, Alu Noble, Adama Kenneth K., Abdullahi Zakari, Iwok Unwana U., Egba Augustine C., Oberafo Anthony A. «Characterization of CZTS Absorbent Material Prepared by Field-Assisted Spray Pyrolysis», American Journal of Materials Science 2014, 4 (3): 127-132
Patil, P. S. Versatility of chemical spray pyrolysis technique. «Materials Chemistry and Physics», 1999, 59, 185-198.
Seboui Z, Cuminal Y, Kamoun N. J Energy Renew Sustain 2013; 5: 023113.
Pal Mou, Mathews NR, Gonzalez R, Silva, Mathew X, « Synthesis of Cu2ZnSnS4 nanocrystals by solvothermal method ». Thin Solid Films, 2013, 535, 78-82.
Q. Wang, Y. Wen, R. Chen, B. Shan, «A hybrid functional study of the electronic and optical properties of tetragonal PbO-type phase of ZnO under pressure», J. Alloys Compd.586 (2014)611–615.
Y. Li, J. Meng, «Al-doping effects on structure and optical properties of ZnO nanostructures», Mater. Lett.117 (2014)260–262.
H. Katagiri, K. Saitoh, T. Washio, H. Shinohara, T. Kurumadani, S. Miyajima, «Development of thin film solar cell based on Cu2ZnSnS4 thin films», Sol. Energy Mater. Sol. Cells 65 (2001) 141.