Characteristics of Dye-Sensitized Solar Cell Assembled from Modified Chitosan-Based Gel Polymer Electrolytes Incorporated with Potassium Iodide

Zulkifli, Aimi Mahirah and Said, Nur Izzah Aqilah Mat and Bakr Aziz, Shujahadeen and Dannoun, Elham Mohammed Ali and Hisham, Shameer and Shah, Shahan and Bakar, Amnani Abu and Abidin, Zul Hazrin Zainal and Tajuddin, Hairul Anuar and Mohammed Hadi, Jihad and Brza, Mohamad Ali and Raza Saeed, Salah and Amin, Peshawa Omer (2020) Characteristics of Dye-Sensitized Solar Cell Assembled from Modified Chitosan-Based Gel Polymer Electrolytes Incorporated with Potassium Iodide. Molecules, 25 (18). p. 4115. ISSN 1420-3049, DOI

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In the present work, phthaloyl chitosan (PhCh)-based gel polymer electrolytes (GPEs) were prepared using dimethylformamide (DMF) as a solvent, ethyl carbonate (EC) as a co-solvent, and a set of five quaternaries of potassium iodide (KI) as a doping salt, which is a mixed composition of iodine (I2). The prepared GPEs were applied to dye-sensitized solar cells (DSSC) to observe the effectiveness of the electrolyte, using mesoporous TiO2, which was sensitized with N3 dye as the sensitizer. The incorporation of the potassium iodide-based redox couple in a polymer electrolyte is fabricated for dye-sensitized solar cells (DSSCs). The number of compositions was based on the chemical equation, which is 1:1 for KI:I2. The electrical performance of prepared GPE systems have been assessed using electrical impedance spectroscopy (EIS), and dielectric permittivity. The improvement in the ionic conductivity of PhCh-based GPE was observed with the rise of salt concentration, and the maximum ionic conductivity (4.94 × 10−2 S cm−1) was achieved for the 0.0012 mol of KI:I2. The study of dielectric permittivity displays that ions with a high dielectric constant are associated with a high concentration of added ions. Furthermore, the gel polymer electrolyte samples were applied to DSSCs to detect the conversion effectiveness of the electrolytes. For electrolytes containing various content of KI:I2 the highest conversion efficiency (η%) of DSSC obtained was 3.57% with a short circuit current density (Jsc) of 20.33 mA cm−2, open-circuit voltage (Voc) of 0.37 V, fill factor (FF) of 0.47, as well as a conductivity of 2.08 × 10−2 S cm−1 © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Article
Funders: Ministry of Higher Education & Scientific Research-Kurdish National Research Council (KNRC), Kurdistan Regional Government-Iraq, University of Sulaimani, Komar University of Science and Technology, University of Malaya (RF021B-2018)
Uncontrolled Keywords: gel polymer electrolyte; impedance study; ionic conductivity; dielectric properties; UV-VIS study; dye-sensitized solar cell (DSSC)
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science > Department of Chemistry
Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 20 Jan 2021 02:43
Last Modified: 20 Jan 2021 02:43

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