Effects of additives on the morphology of solution phase aggregates formed by active layer components of high-efficiency organic solar cells

Sylvia J. Lou; Jodi M. Szarko; Tao Xu; Luping Yu; Tobin J. Marks; Lin X. Chen

doi:10.1021/ja2085564

Effects of additives on the morphology of solution phase aggregates formed by active layer components of high-efficiency organic solar cells

Sylvia J. Lou, Jodi M. Szarko, Tao Xu, Luping Yu^*, Tobin J. Marks, Lin X. Chen

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

487 Scopus citations

Abstract

Processing additives are used in organic photovoltaic systems to optimize the active layer film morphology. However, the actual mechanism is not well understood. Using X-ray scattering techniques, we analyze the effects of an additive diiodooctane (DIO) on the aggregation of a high-efficiency donor polymer PTB7 and an acceptor molecule PC₇₁BM under solar cell processing conditions. We conclude that DIO selectively dissolves PC ₇₁BM aggregates, allowing their intercalation into PTB7 domains, thereby optimizing both the domain size and the PTB7-PC₇₁BM interface.

Original language	English (US)
Pages (from-to)	20661-20663
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	133
Issue number	51
DOIs	https://doi.org/10.1021/ja2085564
State	Published - Dec 28 2011

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja2085564

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abstract = "Processing additives are used in organic photovoltaic systems to optimize the active layer film morphology. However, the actual mechanism is not well understood. Using X-ray scattering techniques, we analyze the effects of an additive diiodooctane (DIO) on the aggregation of a high-efficiency donor polymer PTB7 and an acceptor molecule PC71BM under solar cell processing conditions. We conclude that DIO selectively dissolves PC 71BM aggregates, allowing their intercalation into PTB7 domains, thereby optimizing both the domain size and the PTB7-PC71BM interface.",

author = "Lou, {Sylvia J.} and Szarko, {Jodi M.} and Tao Xu and Luping Yu and Marks, {Tobin J.} and Chen, {Lin X.}",

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AU - Lou, Sylvia J.

AU - Szarko, Jodi M.

AU - Xu, Tao

AU - Yu, Luping

AU - Marks, Tobin J.

AU - Chen, Lin X.

PY - 2011/12/28

Y1 - 2011/12/28

N2 - Processing additives are used in organic photovoltaic systems to optimize the active layer film morphology. However, the actual mechanism is not well understood. Using X-ray scattering techniques, we analyze the effects of an additive diiodooctane (DIO) on the aggregation of a high-efficiency donor polymer PTB7 and an acceptor molecule PC71BM under solar cell processing conditions. We conclude that DIO selectively dissolves PC 71BM aggregates, allowing their intercalation into PTB7 domains, thereby optimizing both the domain size and the PTB7-PC71BM interface.

AB - Processing additives are used in organic photovoltaic systems to optimize the active layer film morphology. However, the actual mechanism is not well understood. Using X-ray scattering techniques, we analyze the effects of an additive diiodooctane (DIO) on the aggregation of a high-efficiency donor polymer PTB7 and an acceptor molecule PC71BM under solar cell processing conditions. We conclude that DIO selectively dissolves PC 71BM aggregates, allowing their intercalation into PTB7 domains, thereby optimizing both the domain size and the PTB7-PC71BM interface.

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Effects of additives on the morphology of solution phase aggregates formed by active layer components of high-efficiency organic solar cells

Abstract

ASJC Scopus subject areas

UN SDGs

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