Article history: Polyaniline-grafted silica nanocomposites (PANI-SiO ), which are synthesized through in-situ surface Received 2 June 2017 chemical oxidative polymerization of aniline with the NH -modiﬁed silica nanoparticles, are exploited Received in revised form 21 July 2017 as gelators in the ionic-liquid electrolytes for dye-sensitized solar cells (DSCs). It can be clearly seen Accepted 2 August 2017 that the PANI-SiO nanocomposites have the well-interconnected network structure, which not only Available online 5 August 2017 serve as gelators to effectively solidfy the ionic-liquid electrolytes, but also signiﬁcantly improve the ion conductivity of electrolytes and the diffusion coefﬁcient of I ions. As a result, an optimal efﬁciency of Keywords: 7.15% for DSC using gel electrolyte is achieved due to the enhancement of photocurrent density (J ) and sc Polyaniline ﬁll factor (FF), which is increased by 18.99% than that of the cell using ionic-liquid electrolyte. Nanocomposites © 2017 Elsevier B.V. All rights reserved. Gel electrolytes Dye-sensitized solar cells 1. Introduction the room-temperature ionic-liquids because of their high ther- mal stability, broad electrochemical window and negligible vapor Due to the increasingly environmental problems and severe pressure [18–20]. Unfortunately, the ionic-liquid electrolytes are energy-shortage, the development of next-generation photo- still suffering the leakage
Applied Surface Science – Elsevier
Published: Jan 1, 2018
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