The effect of TiCl treatment on the performance of dye-sensitized solar cells.

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ID: 67426
2019
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Abstract
Titanium dioxide (TiO) is used to form the anode in dye sensitized solar cells (DSSCs) and is thus one of the crucial components of this type of solar cell. A large range of treatments of the titania anode before deposition of the dye have been applied to improve the performance of DSSCs among which the TiCl treatment is the most frequently used treatment. The present study investigates how the TiCl treatment of the TiO changes the anode. For this purpose, different sample sets, nontreated, post-treated, and pre-post treated cells, were fabricated and analyzed with electron and ion scattering spectroscopy to investigate how they change the titania surface and consequently influence the cell performance. After the TiCl treatment, the short circuit current density (J), open-circuit voltage (V), and efficiency significantly improved. An upward shift in the conduction band of the semiconductor as an effect of TiCl treatment was measured using inverse photoemission spectroscopy and UV-photoelectron spectroscopy. An increase in dye adsorption due to the treatment was found through neutral impact collision ion scattering spectroscopy measurement. The change in the energy level alignment of the titania and the adsorbed dye and the increase in dye loading explain the threefold increase of power conversion of the cells.
Reference Key
adhikari2019thethe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Adhikari, Sunita G;Shamsaldeen, Altaf;Andersson, Gunther G;
Journal The Journal of Chemical Physics
Year 2019
DOI
10.1063/1.5125996
URL
Keywords
optoelectronics cyanoacrylic dssc hydantoin triphenylamine

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