Polyester Gel Electrolyte with Three Dimensional Network for Efficient Quasi-Solid-State Dye-Sensitized Solar Cells

In this work, a series of novel polymer gel electrolytes with 3D network as ion channels were extensively investigated. Four type polyesters, which are poly (glutaric acid pentaerythritol ester) (PGAPE), poly (adipic acid pentaerythritol ester) (PAAPE), poly (suberic acid pentaerythritol ester) (PSAPE) and poly (pentanedioic acid pentaerythritol ester) (PPAPE), were successfully developed for quasi-solid-state dye-sensitized solar cells (DSCs) with a maximum PCE of 5.32% under AM 1.5 illumination. Photoelectrochemical measurements of the DSCs were conducted by using electrochemical workstation. The present findings indicate that the 3D network structure of polyesters can facilitate the ionic transport and improve the PCE of the DSCs.