We report a novel flexible hybrid plastic film that can be used as a robust electrode platform for typical thin-film optoelectronic devices. Silver nanowires (AgNWs) were embedded on the surface of a glass-fabric reinforced transparent composite (GFRHybrimer) film to form a flexible transparent conducting substrate with excellent opto-electrical properties, superior thermal stability, and impressive mechanical flexibility. A highly efficient and flexible inverted organic solar cell with a power conversion efficiency (PCE) of 5.9% under 100 mW cm À2 AM 1.5G illumination was fabricated on the AgNW–GFRHybrimer film. The AgNW–GFRHybrimer film exhibits potential as an excellent transparent electrode for low cost flexible optoelectronic devices. Broader context Flexible optoelectronic devices need high performance exible substrates, but typical plastic substrates are not appropriate especially due to their low glass transition temperature. Here, we propose a highly transparent, mechanically and thermally robust electrode platform for thin-lm optoelectronic devices. Utilizing the platform, an organic solar cell (OSC) showing the power conversion efficiency as high as 5.9% was achieved. The newly suggested material composite would open up practical uses of exible substrates for high performance thin-lm optoelectronic and energy conversion devices.