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Enhanced photovoltaic performances of quasi-solid-state dye-sensitized solar cells using a novel conducting gel electrolyte.
- Source :
-
Journal of Power Sources . Feb2014, Vol. 248, p923-930. 8p. - Publication Year :
- 2014
-
Abstract
- Abstract: The extension of electrocatalytic reaction area toward iodides is expected to significantly accelerate the recovery of redox couples and therefore photovoltaic performances of quasi-solid-state dye-sensitized solar cells (DSSCs). To improve the cell properties of DSSC, a three-dimensional polypyrrole imbibed poly(hydroxyethyl acrylate)/poly(ethylene glycol) gel electrolyte has been successfully synthesized using the adsorption behavior of amphiphilic poly(hydroxyethyl acrylate)/poly(ethylene glycol) to pyrrole monomers. Resultant gel electrolyte is thoroughly characterized by spectral analysis and electrochemical characterizations. In comparison with pure poly(hydroxyethyl acrylate)/poly(ethylene glycol) gel electrolyte, the incorporation of electron-conducting polypyrrole shows enhanced physicochemical properties. Interconnected micropores within the gel electrolyte provides space for holding I−/I3 − liquid electrolyte, giving an ionic conductivity of 21.08 mS cm−1. The integration of polypyrrole on poly(hydroxyethyl acrylate)/poly(ethylene glycol) gives a higher electrocatalytic activity because of the extension of electrocatalytic reaction toward I−/I3 − couple from counter electrode/gel electrolyte interface to the three-dimensional framework of gel electrolyte. The resultant DSSC from polypyrrole imbibed poly(hydroxyethyl acrylate)/poly(ethylene glycol) gel electrolyte displays a light-to-electric conversion efficiency of 7.02% in comparison with 5.76% from pure poly(hydroxyethyl acrylate)/poly(ethylene glycol). The new concept along with easy fabrication promise the conducting polymer imbibed amphiphilic gel electrolytes good candidates in robust DSSCs. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03787753
- Volume :
- 248
- Database :
- Academic Search Index
- Journal :
- Journal of Power Sources
- Publication Type :
- Academic Journal
- Accession number :
- 92653475
- Full Text :
- https://doi.org/10.1016/j.jpowsour.2013.10.025