Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/4219
Title: Effect of Thickness on Charge Transfer Properties of Conductive Polymer Based Pedot Counter Electrodes in DSSC
Authors: Pradhan, S C
Soman, S
Keywords: PEDOT
Counter electrode
DSSC
EIS
Issue Date: Nov-2021
Publisher: Elsevier
Citation: Results in Surfaces and Interfaces; 5: Article ID: 100030
Abstract: Poly(3,4-propylenedioxythiophene (PEDOT) counter electrodes are considered to be one of the most promising alternatives to expensive Pt-based counter electrodes in dye sensitized solar cells (DSSC). In the present study, we prepared PEDOT counter electrodes with various thicknesses through scalable electropolymerization technique using a nontoxic mixture of sodium dodecyl sulfate (SDC) in water medium, which provides the opportunity for scale up and commercialization. The time scale for electropolymerization was varied systematically to tune the thickness and uniformity of PEDOT film. The PEDOT films and their interaction with conventional iodide/triiodide (Iāˆ’āˆ•š¼āˆ’ 3 ) electrolyte was studied using various electrical and optical characteriza- tion techniques. The catalytic activity of porous PEDOT films were found to be decreasing with an increase in thickness. DSSCs fabricated using PEDOT counter electrodes having lower thickness of 33 nm (deposited with 5 s polymerization time) showed superior power conversion efficiency of 10.39%, followed by PEDOT counter electrodes having 65 nm and 120 nm thickness deposited with polymerization time of 10 s and 15 s delivering power conversion efficiencies of 8.11% and 7.45% respectively. Electrochemical Impedance Spectroscopy (EIS) was used to investigate the role of variation in PEDOT thickness with various charge transfer processes at the electrolyte/counter electrode interface influencing PV performance
URI: https://doi.org/10.1016/j.rsurfi.2021.100030
http://localhost:8080/xmlui/handle/123456789/4219
Appears in Collections:2021



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