Abstract
For various reasons, low cost, easy fabrication, and so forth, dye‐sensitized solar cells (DSSCs) have been consistently studied in many laboratories. To improve the DSSCs performance, using an aqueous solution of titanium tetrachloride (TiCl4) treatment is one of many processes. Before the treatment of TiCl4, nanoporous TiO2 nanotubes (TNTs) are fabricated through a secondary anodization process. TiCl4 treatment on TNTs film enhanced short‐circuit current density (JSC) and aluminum oxide (Al2O3) posttreatment enhanced open‐circuit voltage (VOC). As a result, Al2O3 posttreatment on TNTs film conversion efficiency of 8.65% is realized, which is 7% higher than TiCl4 treatment on TNTs film. In this work, we investigated that double dip‐coating of TiCl4/Al2O3 treatment on TiO2 nanotubes film had an effect on enhancement of JSC and VOC due to improvement of electron transfer, increment of dye adsorption, and reduction of recombination rate of charge. Photoelectrode DSSCs with light‐to‐electric energy conversion efficiency were achieved under a simulated solar light irradiation of 100 mW·cm2 (AM 1.5).
Highlights
Since the first report by Gratzel in 1991, dye-sensitized solar cells (DSSCs) have been consistently researched due to their low manufacturing costs, simple structure, and wide range of applications [1,2,3]
We investigated the effects of double dip-coating with TiCl4 treatment and after Al2O3 posttreatment on TiO2 nanotubes layers (TNTs) based DSSCs
The Energy Dispersive X-ray Spectroscopy (EDX) analysis of the TiCl4 90 mM treatment for 90 min and Al2O3 120 mM posttreatment for 60 min on TNTs film is shown in Figure 1, which indicated the presence of about 6.18 atomic % of Al and 22.28 atomic % of Ti
Summary
Since the first report by Gratzel in 1991, dye-sensitized solar cells (DSSCs) have been consistently researched due to their low manufacturing costs, simple structure, and wide range of applications [1,2,3]. TiO2 nanotubes layers (TNTs) have attracted much attention, because of their geometric shape and simple anodic process of fabrication, which improve the electron transport between electrode layers. Method of improving the DSSCs efficiency is using incorporation of atomic impurities Zn, Wo, Al, and so forth [17,18,19,20,21]. It results in reduction in the charge recombination rate and progressing of electron mobility at the interface between electrode layers. The TiCl4/Al2O3 posttreatment on TNT film were studied in terms of dye adsorption, charge transport, and electron lifetime. We investigated the effects of double dip-coating with TiCl4 treatment and after Al2O3 posttreatment on TNTs based DSSCs
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
