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Stable dye-sensitized solar cells based on a gel electrolyte with ethyl cellulose as the gelator

Vasei, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1007/s00339-015-9332-8
  3. Publisher: Springer Verlag , 2015
  4. Abstract:
  5. A simple gelating process is developed for the conventional acetonitrile-based electrolyte of dye solar cells, based on ethyl cellulose as the gelator. The electrolyte becomes quasi-solid-state upon addition of an ethanolic solution of ethyl cellulose to the conventional acetonitrile-based liquid electrolyte. The photovoltaic conversion efficiency with the new gel electrolyte is only slightly lower than with the liquid electrolyte, e.g., 6.5 % for liquid electrolyte versus 5.9 % for gel electrolyte with 5.8 wt% added ethyl cellulose. Electrolyte gelation has small effect on the ionic diffusion coefficient of iodide, and the devices are remarkably stable for at least 550 h under irradiation at 55 °C
  6. Keywords:
  7. Acetonitrile ; Cellulose ; Electrolytes ; Liquids ; Solar cells ; Solid electrolytes ; Dye solar cells ; Ethanolic solution ; Ethyl cellulose ; Gel electrolyte ; Gelators ; Liquid electrolytes ; Photovoltaic conversion ; Quasi-solid state ; Dye-sensitized solar cells
  8. Source: Applied Physics A: Materials Science and Processing ; Volume 120, Issue 3 , September , 2015 , Pages 869-874 ; 09478396 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs00339-015-9332-8