Suppression of bimolecular recombination by UV-sensitive electron transport layers in organic solar cells

Doo Hyun Ko; John R. Tumbleston; Myoung Ryul Ok; Honggu Chun; Rene Lopez; Edward Samulski

doi:10.1063/1.3488609

Suppression of bimolecular recombination by UV-sensitive electron transport layers in organic solar cells

Doo Hyun Ko, John R. Tumbleston, Myoung Ryul Ok, Honggu Chun, Rene Lopez, Edward Samulski

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

8 Citations (Scopus)

Abstract

Incorporating UV-sensitive electron transport layers (ETLs) into organic bulk heterojunction (BHJ) photovoltaic devices dramatically impacts short-circuit current (Jsc) and fill factor characteristics. Resistivity changes induced by UV illumination in the ETL of inverted BHJ devices suppress bimolecular recombination producing up to a two orders of magnitude change in Jsc. Electro-optical modeling and light intensity experiments effectively demonstrate that bimolecular recombination, in the form of diode current losses, controls the extracted photocurrent and is directly dependent on the ETL resistivity.

Original language	English
Article number	083101
Journal	Journal of Applied Physics
Volume	108
Issue number	8
DOIs	https://doi.org/10.1063/1.3488609
Publication status	Published - 2010 Oct 15
Externally published	Yes

Bibliographical note

Funding Information:
Support for this work is from NSF (Solar: Grant No. DMR-0934433) and from UNC-Chapel Hill Institute for the Environment Carolina Energy Fellow. Acknowledgment is made to the donors of The American Chemical Society Petroleum Research Fund (PRF) (Grant No. 49187-DNI10) for partial support of this research. We thank Professor Frank Tsui, Will Rice, Matt Wolboldt, Dr. Matthew K. Brennaman, Ralph L. House, Dr. Kwan Skinner, and Dr. Ethan Klem for stimulating conversations.

ASJC Scopus subject areas

Physics and Astronomy(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1063/1.3488609

Cite this

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abstract = "Incorporating UV-sensitive electron transport layers (ETLs) into organic bulk heterojunction (BHJ) photovoltaic devices dramatically impacts short-circuit current (Jsc) and fill factor characteristics. Resistivity changes induced by UV illumination in the ETL of inverted BHJ devices suppress bimolecular recombination producing up to a two orders of magnitude change in Jsc. Electro-optical modeling and light intensity experiments effectively demonstrate that bimolecular recombination, in the form of diode current losses, controls the extracted photocurrent and is directly dependent on the ETL resistivity.",

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AU - Ko, Doo Hyun

AU - Tumbleston, John R.

AU - Ok, Myoung Ryul

AU - Chun, Honggu

AU - Lopez, Rene

AU - Samulski, Edward

N1 - Funding Information: Support for this work is from NSF (Solar: Grant No. DMR-0934433) and from UNC-Chapel Hill Institute for the Environment Carolina Energy Fellow. Acknowledgment is made to the donors of The American Chemical Society Petroleum Research Fund (PRF) (Grant No. 49187-DNI10) for partial support of this research. We thank Professor Frank Tsui, Will Rice, Matt Wolboldt, Dr. Matthew K. Brennaman, Ralph L. House, Dr. Kwan Skinner, and Dr. Ethan Klem for stimulating conversations.

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N2 - Incorporating UV-sensitive electron transport layers (ETLs) into organic bulk heterojunction (BHJ) photovoltaic devices dramatically impacts short-circuit current (Jsc) and fill factor characteristics. Resistivity changes induced by UV illumination in the ETL of inverted BHJ devices suppress bimolecular recombination producing up to a two orders of magnitude change in Jsc. Electro-optical modeling and light intensity experiments effectively demonstrate that bimolecular recombination, in the form of diode current losses, controls the extracted photocurrent and is directly dependent on the ETL resistivity.

AB - Incorporating UV-sensitive electron transport layers (ETLs) into organic bulk heterojunction (BHJ) photovoltaic devices dramatically impacts short-circuit current (Jsc) and fill factor characteristics. Resistivity changes induced by UV illumination in the ETL of inverted BHJ devices suppress bimolecular recombination producing up to a two orders of magnitude change in Jsc. Electro-optical modeling and light intensity experiments effectively demonstrate that bimolecular recombination, in the form of diode current losses, controls the extracted photocurrent and is directly dependent on the ETL resistivity.

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Suppression of bimolecular recombination by UV-sensitive electron transport layers in organic solar cells

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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