Effects of Ti 3 C 2 Tx MXene Addition to a Co Complex/Ionic Liquid-Based Electrolyte on the Photovoltaic Performance of Solar Cells

Redox mediators comprising I , Co , and Ti C Tx MXene were applied to dye-sensitized solar cells (DSCs). In the as-prepared DSCs (I-DSCs), wherein hole conduction occurred via the redox reaction of I /I ions, the power conversion efficiency (PCE) was not altered by the addition of Ti C Tx MXene. The...

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Bibliographic Details
Published inMolecules (Basel, Switzerland) Vol. 29; no. 6
Main Authors Gu, Ju Hee, Park, Dongho, Jung, Kyung-Hye, Lee, Byung Chul, Han, Yoon Soo
Format Journal Article
LanguageEnglish
Published Switzerland 18.03.2024
Subjects
hole conduction
Ti3C2Tx MXene
redox mediator
dye-sensitized solar cell
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Summary:Redox mediators comprising I , Co , and Ti C Tx MXene were applied to dye-sensitized solar cells (DSCs). In the as-prepared DSCs (I-DSCs), wherein hole conduction occurred via the redox reaction of I /I ions, the power conversion efficiency (PCE) was not altered by the addition of Ti C Tx MXene. The I-DSCs were exposed to light to produce Co /Co -based cells (Co-DSCs), wherein the holes were transferred via the redox reaction of Co /Co ions. A PCE of 9.01% was achieved in a Co-DSC with Ti C Tx MXene (Ti C Tx-Co-DSC), which indicated an improvement from the PCE of a bare Co-DSC without Ti C Tx MXene (7.27%). It was also found that the presence of Ti C Tx MXene in the redox mediator increased the hole collection, dye regeneration, and electron injection efficiencies of the Ti C Tx-Co-DSC, leading to an improvement in both the short-circuit current and the PCE when compared with those of the bare Co-DSC without MXene.
ISSN:1420-3049