Journal of Materials Science

, Volume 53, Issue 17, pp 12365–12373 | Cite as

Porous composite separator membranes of dye-sensitized solar cells with flexible substrate for their improved stability

  • Gun Hee Kim
  • Sung Chul Hong
Energy materials


The durability of a dye-sensitized solar cell with flexible substrate (fDSSC) was improved by introducing a composite separator membrane (CSM) between the TiO2 working electrode and the counter electrode (CE). The fDSSC was fabricated by replacing a typical fluorine-doped tin oxide glass substrate of the platinum CE with a flexible indium tin oxide-coated poly(ethylene naphthalate) substrate. The CSM was a triple-layered membrane composed of poly(ethylene terephthalate) nonwoven fabric between the poly(vinylidene fluoride-co-hexafluoropropylene) gel layers, which provided a sandwich-like structure. The fDSSC with the CSM exhibited relatively good electrolyte retention capability and improved interfacial contact between the components, affording an fDSSC with high energy conversion efficiency and stable long-term performance. The potential of a CSM as an efficient component for durable flexible energy devices is demonstrated.



This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2015R1D1A1A09061172).


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Authors and Affiliations

  1. 1.Department of Nanotechnology and Advanced Materials EngineeringSejong UniversitySeoulRepublic of Korea

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