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Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping

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Ambient temperature plastic crystal electrolyte for efficient, all-solid-state dye-sensitized solar cell.

Peng Wang¹, Qing Dai, Shaik M Zakeeruddin

¹Laboratory for Photonics and Interfaces, Swiss Federal Institute of Technology, CH 1015, Lausanne, Switzerland.

Journal of the American Chemical Society

|October 21, 2004

Summary

Researchers developed a highly conductive solid conductor by doping succinonitrile plastic crystals with an iodide salt and iodine. This material enables highly efficient, all-solid-state dye-sensitized solar cells.

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Area of Science:

Materials Science
Electrochemistry
Solid-State Physics

Background:

Solid-state electrolytes are crucial for developing safer and more efficient energy storage and conversion devices.
Plastic crystals offer unique properties as host materials for ionic conductors due to their orientational disorder.

Purpose of the Study:

To synthesize a novel solid iodide/triiodide conductor by doping succinonitrile.
To investigate the conductivity of the doped material.
To evaluate the performance of the material in an all-solid-state dye-sensitized solar cell (DSSC).

Main Methods:

Doping the molecular plastic crystal of succinonitrile with N-methyl-N-butylpyrrolidinium iodide salt and iodine.
Characterization of the resulting solid conductor's ionic conductivity.
Fabrication and testing of an all-solid-state DSSC utilizing the novel conductor.

Main Results:

A highly conductive solid iodide/triiodide conductor was successfully produced.
The doped material exhibited excellent conductivity, suitable for electrochemical applications.
The all-solid-state DSSC incorporating this conductor demonstrated high efficiency.

Conclusions:

Doping succinonitrile with iodide salts and iodine is an effective strategy for creating advanced solid conductors.
The developed solid conductor shows significant promise for high-performance, all-solid-state energy devices, particularly DSSCs.