We report on the preparation and characterization of novel polymer electrolyte membranes for quasi-solid dye-sensitized solar cells. New methacrylic–acrylic gel-polymer electrolytes were prepared by photo-polymerization of mono/di-functional monomers. The crosslinked films were self standing, transparent and flexible. They were swelled by an iodine–iodide solution, obtaining a stable gel, where the polymeric network acts as a cage to retain the liquid, preventing its evaporation. Such a system combines the cohesive property of a solid with the high ionic conductivity of a liquid. The evaluation of the structural and physical-chemical characteristics of the polymer, combined with the electrical characterization of the membranes by means of the electrochemical impedance spectroscopy, allowed us to investigate the structure/property relationship of the material. The electric characterizations of the solar harvester based on the gel-polymer electrolyte showed a maximum photovoltaic conversion efficiency of 4.41%. Moreover, a significant improvement in the durability of the device was demonstrated with respect to the liquid electrolyte-based counterpart.
Polymer electrolytes for dye-sensitized solar cells prepared by photopolymerization of PEG-based oligomers / Bella F.; Ozzello E. D.; Sacco A.; Bianco S.; Bongiovanni R.. - In: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY. - ISSN 0360-3199. - ELETTRONICO. - 39:6(2014), pp. 3036-3045. [10.1016/j.ijhydene.2013.06.110]
|Titolo:||Polymer electrolytes for dye-sensitized solar cells prepared by photopolymerization of PEG-based oligomers|
|Data di pubblicazione:||2014|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.ijhydene.2013.06.110|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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