Produce of graphene/iron pyrite (FeS2) thin films counter electrode for dye-sensitized solar cell

Date

2016-12-15

Author

KILIÇ, BAYRAM
TÜRKDOĞAN, SUNAY
Ozer, Oguz Can
Asgin, Mansur
Bayraklı, Özge
SÜRÜCÜ, GÖKHAN
ASTAM, AYKUT
EKİNCİ, Duygu

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Dye-sensitized solar cells (DSSCs) provide a low cost alternative to the conventional solar cells due to their easy and inexpensive device fabrication steps. Generally, F:SnO2 (FM) conductive glass with a thin layer coating of platinum (Pt) is used as a counter electrode (CE) in DSSCs. Since Pt is rare and therefore expensive metal, we were looking for a way to produce a new counter electrode based on graphene/iron pyrite (FeS2) thin films as an alternative to the Pt:FTO. In combination with a TiO2 mesoporous photo anode and an I-3(-)/I- redox electrolyte, graphene/FeS2 CE based DSSC shows eta =7.43% energy conversion efficiency under 1 sun illumination (100 mW/cm(2), AM 1.5G) which is approximately 16.1% higher than conventional Pt CE (eta=6.40%). External Quantum Efficiency (EQE) is found to be shifted upward when graphene/FeS2 is used as CE in the place of Pt CE. The excellent performance of the graphene/FeS2 CE makes it a very promising alternative to costly Pt in DSSCs. (C) 2016 Published by Elsevier B.V.

Subject Keywords

Graphene, Tio(2), DSSC, Pyrite (FeS2), Counter electrode

URI

https://hdl.handle.net/11511/57435

Journal

MATERIALS LETTERS

DOI

https://doi.org/10.1016/j.matlet.2016.06.069

Collections

Department of Physics, Article

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Citation Formats

B. KILIÇ et al., “Produce of graphene/iron pyrite (FeS2) thin films counter electrode for dye-sensitized solar cell,” MATERIALS LETTERS, pp. 584–587, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57435.