Improved power conversion efficiency of dye-sensitized solar cells using side chain liquid crystal polymer embedded in polymer electrolytes |
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| Authors: | Woosum Cho Jae Wook Lee Yeong-Soon Gal Mi-Ra Kim Sung Ho Jin |
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| Affiliation: | 1. Department of Chemistry Education, and Department of Frontier Materials Chemistry, and Institute for Plastic Information and Energy Materials, Pusan National University, Busan 609-735, Republic of Korea;2. Department of Chemistry, Dong-A University, Busan 604-714, Republic of Korea;3. Polymer Chemistry Lab, College of General Education, Kyungil University, Hayang 712-701, Republic of Korea;4. Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Republic of Korea |
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| Abstract: | Side chain liquid crystal polymer (SCLCP) embedded in poly(vinylidenefluoride-co-hexafluoropropylene) (PVdF-co-HFP)-based polymer electrolytes (PVdF-co-HFP:side chain liquid crystal polymer (SCLCP)) was prepared for dye-sensitized solar cell (DSSC) application. The polymer electrolytes contained tetrabutylammonium iodide (TBAI), iodine (I2), and 8 wt% PVdF-co-HFP in acetonitrile. DSSCs comprised of PVdF-co-HFP:SCLCP-based polymer electrolytes displayed enhanced redox couple reduction and reduced charge recombination in comparison to those of the conventional PVdF-co-HFP-based polymer electrolyte. The significantly increased short-circuit current density (Jsc, 10.75 mA cm−2) of the DSSCs with PVdF-co-HFP:SCLCP-based polymer electrolytes afforded a high power conversion efficiency (PCE) of 5.32% and a fill factor (FF) of 0.64 under standard light intensity of 100 mW cm−2 irradiation of AM 1.5 sunlight. |
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| Keywords: | Electronic materials Liquid crystals Polymers Electrochemical properties |
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