Volume 130, Issue 19 pp. 5570-5574
Zuschrift

A High-Voltage Molecular-Engineered Organic Sensitizer–Iron Redox Shuttle Pair: 1.4 V DSSC and 3.3 V SSM-DSSC Devices

Roberta R. Rodrigues

Roberta R. Rodrigues

Department of Chemistry and Biochemistry, University of Mississippi, 481 Coulter Hall, University, MS, 38677 USA

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Dr. Hammad Cheema

Dr. Hammad Cheema

Department of Chemistry and Biochemistry, University of Mississippi, 481 Coulter Hall, University, MS, 38677 USA

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Prof. Jared H. Delcamp

Corresponding Author

Prof. Jared H. Delcamp

Department of Chemistry and Biochemistry, University of Mississippi, 481 Coulter Hall, University, MS, 38677 USA

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First published: 12 March 2018
Citations: 7

Abstract

The development of high voltage solar cells is an attractive way to use sunlight for solar-to-fuel devices, multijunction solar-to-electric systems, and to power limited-area consumer electronics. By designing a low-oxidation-potential organic dye (RR9)/redox shuttle (Fe(bpy)33+/2+) pair for dye-sensitized solar-cell (DSSC) devices, the highest single device photovoltage (1.42 V) has been realized for a DSSC not relying on doped TiO2. Additionally, Fe(bpy)33+/2+ offers a robust, readily tunable ligand platform for redox potential tuning. RR9 can be regenerated with a low driving force (190 mV), and by utilizing the RR9/Fe(bpy)33+/2+ redox shuttle pair in a subcell for a sequential series multijunction (SSM)-DSSC system, one of the highest known three subcell photovoltage was attained for any solar-cell technology (3.34 V, >1.0 V per subcell).

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