What question did this study set out to answer?

To examine how molecular composition and intermolecular interactions in molecular donor materials influence the dark current and open circuit voltage of fullerene-based organic solar cells.

June 11, 2009Journal of the American Chemical Society

Molecular and Morphological Influences on the Open Circuit Voltages of Organic Photovoltaic Devices

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Authors

MPM. Dolores PerezComisión Nacional de Energía Atómica CBCarsten BorekUniversity of Southern California SFStephen R. ForrestNorthwestern University

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Implication

Experimental study reveals how molecular packing influences dark current and open circuit voltage in organic solar cells, highlighting pathways to maximize photovoltaic power conversion efficiency.

Key Points

To examine how molecular composition and intermolecular interactions in molecular donor materials influence the dark current and open circuit voltage of fullerene-based organic solar cells.
Fabricated C60-based organic photovoltaic cells using molecular donor materials with varied intermolecular pi-interaction tendencies.
Characterized thin-film intermolecular aggregation and structural polycrystallinity using optical absorption spectroscopy and thin-film X-ray diffraction.
Open circuit voltage exhibited a strong inverse correlation with saturation dark current density across all tested device configurations.
Donor materials with pronounced intermolecular aggregation and polycrystalline thin-film morphology produced high dark current densities and lower open circuit voltages.
Donors structurally engineered to suppress intermolecular pi-interactions formed amorphous films that reduced dark current density and enhanced open circuit voltage.

Cite This Study

Perez et al. (2009) studied this question.

synapsesocial.com/papers/6a0cd3a09d761985b14a5294 https://doi.org/10.1021/ja9007722

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Implication

Experimental study reveals how molecular packing influences dark current and open circuit voltage in organic solar cells, highlighting pathways to maximize photovoltaic power conversion efficiency.

Molecular and Morphological Influences on the Open Circuit Voltages of Organic Photovoltaic Devices

Discussion

Member takes

Implication

Key Points

Cite This Study

Molecular and Morphological Influences on the Open Circuit Voltages of Organic Photovoltaic Devices

Discussion

Member takes

Implication

Key Points

Cite This Study

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