Cross-linked gel polymer electrolyte containing multi-wall carbon nanotubes for application in dye-sensitized solar cells

► We investigated a gel polymer electrolyte containing different amounts of carbon nanotubes. ► The copolymer used to prepare electrolyte promote a dimensional stability in the systems. ► Electrolyte composed with 1 wt% multi-wall carbon nanotube showed conductivities up to 10−3 S cm−1. ► Dye-sensitized solar cells based on electrolyte presented conversion efficiencies up to 3.33%.