Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7908668 | Optical Materials | 2016 | 8 Pages |
Abstract
In this work, we have investigated the influence of guanine as an organic dopant in dye-sensitized solar cell (DSSC) based on poly(vinylidinefluoride-co-hexafluoropropylene) (PVDF-HFP)/polyethylene oxide (PEO) polymer blend electrolyte along with binary iodide salts (potassium iodide (KI) and tetrabutylammonium iodide (TBAI)) and iodine (I2). The PVDF-HFP/KIÂ +Â TBAI/I2, PVDF-HFP/PEO/KIÂ +Â TBAI/I2 and guanine incorporated PVDF-HFP/PEO/KIÂ +Â TBAI/I2 electrolytes were prepared by solution casting technique using DMF as solvent. The PVDF-HFP/KIÂ +Â TBAI/I2 electrolyte showed an ionic conductivity value of 9.99Â ÃÂ 10â5Â Scmâ1, whereas, it was found to be increased to 4.53Â ÃÂ 10â5 Scmâ1 when PEO was blended with PVDF-HFP/KIÂ +Â TBAI/I2 electrolyte. However, a maximum ionic conductivity value of 3.67Â ÃÂ 10â4Â Scmâ1 was obtained for guanine incorporated PVDF-HFP/PEO/KIÂ +Â TBAI/I2 blend electrolyte. The photovoltaic properties of all these polymer electrolytes in DSSCs were characterized. As a consequence, the power conversion efficiency of the guanine incorporated PVDF-HFP/PEO/KIÂ +Â TBAI/I2 electrolyte based DSSC was significantly improved to 4.98% compared with PVDF-HFP/PEO/KIÂ +Â TBAI/I2 electrolyte based DSSC (2.46%). These results revealed that the guanine can be an effective organic dopant to enhance the performance of DSSCs.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
R.A. Senthil, J. Theerthagiri, J. Madhavan, A.K. Arof,