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High Efficiency Inverted Polymer Solar Cells Fabricated Based on ZnO-ETL Utilizing Spray Pyrolysis Technique
E. Moustafa, J.G. Sánchez López, L.F. Marsal Garví, J. Pallarès Marzal
Deposition, Spray Pyrolysis, Zinc Oxide, Thin Film (TF), Polymer Solar Cells
Perovskites and Other Non-Silicon Materials, MJs and Tandems
Subtopic: Organic and Dye-Sensitised
Event: 37th European Photovoltaic Solar Energy Conference and Exhibition
Session: 3BV.2.55
738 - 741
ISBN: 3-936338-73-6
Paper DOI: 10.4229/EUPVSEC20202020-3BV.2.55
0,00 EUR
Document(s): paper, poster


In this research work, significant progress has been achieved to fabricate efficient inverted polymer solar cells (iPSCs) using simple and low cost spray pyrolysis (SP) technique to deposit a thin film of ZnO as electron transporting layer (ETL). The deposition parameters of the ZnO films by the SP technique have been studied to obtain the optimal conditions that allow achieving high performance of the fabricated iPSCs. Also, the effect of different thicknesses (number of spraying running cycles) with the SP technique on the iPSCs performance has been investigated. Moreover, a standard iPSCs fabricated by spin coating technique has been used as a reference. Four different numbers of spraying running cycles of ZnO were performed, namely, 3R, 5R, 7R and 9R. As the number of running cycles increases the current density of the cells increases and the series resistance decreases. In addition, the 7R-SP iPSCs have showed the best cells performance compared to the others 3R, 5R and 9R samples. At the same time, the performance of the 7R-SP iPSCs was quite similar to the reference samples fabricated by the SC technique. Hence, this promising spray pyrolysis technique might be a breakthrough forward step for the commercialization of inverted polymer solar cell based on mass production as well the probability of improving its efficiency.