Rachod BoonsinJutarat SudchanhamNuttachai PanusophonPisorn Sae-HengChaiyuth Sae-KungPasit PakawatpanurutMahidol UniversityThailand National Science and Technology Development Agency2018-06-112018-06-112012-02-15Materials Chemistry and Physics. Vol.132, No.2-3 (2012), 993-998025405842-s2.0-84856606043https://repository.li.mahidol.ac.th/handle/123456789/14381A non-conducting, nontoxic poly(acrylic acid-co-acrylonitrile) (PAA) was prepared and used as a supporting matrix for the electrolyte of dye-sensitized solar cells (DSSCs). DSSCs of active area 0.80 cm × 1.10 cm fabricated with PAA, 0.5 M LiI, 0.05 M I 2 , 0.5 M 3-tert-butylpyridine, and 0.1 M 1-methyl-3-propylimidazolium iodide in 3-methoxypropionitrile solvent showed an average solar energy conversion efficiency of 1.61% under simulated sunlight illumination of 100 mW cm -2 , AM 1.5. The effects of the gel polymer matrix on the electrochemical properties of DSSCs were studied using the electrochemical impedance spectroscopy. Relative to the non-gel reference cells, the results showed a decrease in charge recombination, ionic diffusion, and double layer capacitance and an increase in electron lifetime. These results could play an important role in determining the future direction for the development of high-performance gel polymer electrolytes. © 2011 Elsevier B.V. All rights reserved.Mahidol UniversityMaterials SciencePhysics and AstronomyArticleSCOPUS10.1016/j.matchemphys.2011.12.048