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Improved cell efficiency of [poly(ethylene oxide)‐succinonitrile]/LiI‐I 2 solid polymer electrolyte‐based dye‐sensitized solar cell
Author(s) -
Gupta Ravindra Kumar,
Bedja Idriss M.
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201330666
Subject(s) - succinonitrile , ethylene oxide , dielectric spectroscopy , electrolyte , materials science , polymer , oxide , chemical engineering , solar cell , polymer chemistry , electrochemistry , chemistry , composite material , electrode , copolymer , optoelectronics , engineering , metallurgy
The effect of succinonitrile on cell efficiency, interfacial resistance, and dye regeneration time of [0.5 poly(ethylene oxide):0.5 succinonitrile] blend/LiI‐I 2 solid polymer electrolyte is reported for the first time. The addition of succinonitrile increased the electrical conductivity of poly(ethylene oxide)/LiI‐I 2 by more than an order in magnitude to ∼3 × 10 −4 S cm −1 due to the plasticizing and molecular diffusing properties of succinonitrile. This resulted in an enhancement of the cell efficiency from 0.5% to 2%. The electrochemical impedance spectroscopy revealed a large decrease of interfacial resistances. The transient absorption spectroscopy showed an improvement of the dye regeneration time from 15 to 5 µs.