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8202219 
Journal Article 
The effect of pH values of ZnS nanoparticles on photoelectrode performance of flexible dye sensitized solar cell 
Salman, G; Medhat, M; Ali Al-Sammarraie, AM 
2018 
13 
23 
9831-9837 
English 
A flexible DSSC with dimension (2×2.5) cm is fabricated and characterized. Titania nanotube arrays /ZnS nanoparticles (TNT/ZnS NPs) are assembled by the deposition of ZnS nanoparticles onto the anodized TiO2 nanotube arrays via sequent-chemical bath deposition. Prior to solar cell construction, the tube-based photo-anodes are annealed at temperature (550°C) and for 2 h. The effect of pH value (7.5, 8.5 and 9.5) of prepared ZnS NPs on the photovoltaic performance of the solar cells is investigated. The performance of the flexible DSSCs was studied in detail using a ployaniline counter electrode and KI/I3 electrolyte. Ruthenium (Ru) dye (N719) was used as an active layer. Characterizations of the films were performed by using scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffractometry. The optimized device performanc of the TNT/ZnS NPs photoanode of ZnS pH value equal to (8.5) displayed the highest conversion efficiency of 1.09% which is higher than that of the other photoelectrodes. The fabricated device showed JSC, VOC and FF values of (4 mA cm-2, 0.39 V and 0.55), respectively. © Medwell Journals, 2018. 
Anodization; Composite material; Flexible DSSCs; Photoanode; Photovoltaic; Sensitizer; TiO2 nanotube