Optimizing Deposition Parameters of DSSCs Composed of Blue TiO2


Atlı A. , Sutcu I., Kerem Yildiz Z., Yıldız A.

IEEE Journal of Photovoltaics, vol.11, no.1, pp.118-123, 2021 (Journal Indexed in SCI Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.1109/jphotov.2020.3038602
  • Title of Journal : IEEE Journal of Photovoltaics
  • Page Numbers: pp.118-123

Abstract

© 2011-2012 IEEE.Here, a simple deposition process is developed to fabricate dye-sensitized solar cells (DSSCs) covering a titanium dioxide (TiO2) compact layer successfully produced by either soaking into a blue titania solution or by spin coating method. The components of photoanode of the devices were sintered at 500 °C with/without employing a preheating treatment. The effects of the method to obtain the compact layer and preheating treatment on the optical and electrical properties of the devices were examined by means of UV-Vis spectroscopy, current-voltage measurement, and electrochemical impedance spectroscopy. The results suggested that these experimental conditions have a vital role in determining photoelectric conversion performance of the devices. Accordingly, considerably improved power conversion efficiency of 4.54% was found in case of employing a compact layer soaked into the solution and preheated, which is exceptionally greater than that of the power conversion efficiency of 0.35% of the device having a spin-coated compact layer and continuous coating of the mesoporous layer without preheating. A significant increase in the efficiency has been accomplished due to the improved electron lifetime. These results demonstrated the critical importance of deposition conditions to evolve the performance of DSSCs.