Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7906832 | Optical Materials | 2018 | 9 Pages |
Abstract
A new gel electrolyte comprising methylcellulose (MC), LiBOB and succinonitrile (SN) has been prepared with dimethyl sulfoxide (DMSO) as solvent. The electrolyte with composition 8.73â¯wt % MC-2.92â¯wt % LiBOB-1.01â¯wt % SN-87.34â¯wt % DMSO exhibits the highest conductivity of 1.18â¯mSâ¯cm-1â¯at 25â¯Â°C. On partially substituting LiBOB with TMAI, the sample designated as TMAI 95 has the highest conducting composition of 8.70â¯wt % MC-0.14â¯wt % LiBOB-1.01â¯wt % SN-2.77â¯wt % TMAI-0.35â¯wt % I2-87.03â¯wt % DMSO. The conductivity is 1.96â¯mSâ¯cmâ1. This sample is used to fabricate a dye sensitized photovoltaic cell that converts photons to electricity at an efficiency of 3.46%. The conductivity of this sample has been enhanced to 3.08â¯mSâ¯cmâ1 on addition of 1.0â¯wt % butyl-methyl immidazolium iodide (BMII) ionic liquid and the efficiency of the cell fabricated is 4.63%. Total replacement of LiBOB component in the electrolyte with the same amount of LiI results in a conductivity increase of â¼23.5% and the DSSC exhibits a 5.72% efficiency.
Keywords
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S.Z. Yusof, H.J. Woo, M.A. Careem, A.K. Arof,