Tuning of a graphene-electrode work function to enhance the efficiency of organic bulk heterojunction photovoltaic cells with an inverted structure

Gunho Jo; Seok In Na; Seung Hwan Oh; Sangchul Lee; Tae Soo Kim; Gunuk Wang; Minhyeok Choe; Woojin Park; Jongwon Yoon; Dong Yu Kim; Yung Ho Kahng; Takhee Lee

doi:10.1063/1.3514551

Tuning of a graphene-electrode work function to enhance the efficiency of organic bulk heterojunction photovoltaic cells with an inverted structure

Gunho Jo, Seok In Na, Seung Hwan Oh, Sangchul Lee, Tae Soo Kim, Gunuk Wang, Minhyeok Choe, Woojin Park, Jongwon Yoon, Dong Yu Kim, Yung Ho Kahng, Takhee Lee

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

97 Citations (Scopus)

Abstract

We demonstrate the fabrication of inverted-structure organic solar cells (OSCs) with graphene cathodes. The graphene film used in this work was work-function-engineered with an interfacial dipole layer to reduce the work function of graphene, which resulted in an increase in the built-in potential and enhancement of the charge extraction, thereby enhancing the overall device performance. Our demonstration of inverted-structure OSCs with work-function-engineering of graphene electrodes will foster the fabrication of more advanced structure OSCs with higher efficiency.

Original language	English
Article number	213301
Journal	Applied Physics Letters
Volume	97
Issue number	21
DOIs	https://doi.org/10.1063/1.3514551
Publication status	Published - 2010 Nov 22
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the National Research Laboratory Program, a National Core Research Center grant, the World Class University program from the Korean Ministry of Education, Science, and Technology, the Korea Institute of Science and Technology Institutional Program, and a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Korean Ministry of Knowledge Economy.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

UN SDGs

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

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10.1063/1.3514551

Cite this

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title = "Tuning of a graphene-electrode work function to enhance the efficiency of organic bulk heterojunction photovoltaic cells with an inverted structure",

abstract = "We demonstrate the fabrication of inverted-structure organic solar cells (OSCs) with graphene cathodes. The graphene film used in this work was work-function-engineered with an interfacial dipole layer to reduce the work function of graphene, which resulted in an increase in the built-in potential and enhancement of the charge extraction, thereby enhancing the overall device performance. Our demonstration of inverted-structure OSCs with work-function-engineering of graphene electrodes will foster the fabrication of more advanced structure OSCs with higher efficiency.",

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AU - Jo, Gunho

AU - Na, Seok In

AU - Oh, Seung Hwan

AU - Lee, Sangchul

AU - Kim, Tae Soo

AU - Wang, Gunuk

AU - Choe, Minhyeok

AU - Park, Woojin

AU - Yoon, Jongwon

AU - Kim, Dong Yu

AU - Kahng, Yung Ho

AU - Lee, Takhee

N1 - Funding Information: This work was supported by the National Research Laboratory Program, a National Core Research Center grant, the World Class University program from the Korean Ministry of Education, Science, and Technology, the Korea Institute of Science and Technology Institutional Program, and a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Korean Ministry of Knowledge Economy.

PY - 2010/11/22

Y1 - 2010/11/22

N2 - We demonstrate the fabrication of inverted-structure organic solar cells (OSCs) with graphene cathodes. The graphene film used in this work was work-function-engineered with an interfacial dipole layer to reduce the work function of graphene, which resulted in an increase in the built-in potential and enhancement of the charge extraction, thereby enhancing the overall device performance. Our demonstration of inverted-structure OSCs with work-function-engineering of graphene electrodes will foster the fabrication of more advanced structure OSCs with higher efficiency.

AB - We demonstrate the fabrication of inverted-structure organic solar cells (OSCs) with graphene cathodes. The graphene film used in this work was work-function-engineered with an interfacial dipole layer to reduce the work function of graphene, which resulted in an increase in the built-in potential and enhancement of the charge extraction, thereby enhancing the overall device performance. Our demonstration of inverted-structure OSCs with work-function-engineering of graphene electrodes will foster the fabrication of more advanced structure OSCs with higher efficiency.

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Tuning of a graphene-electrode work function to enhance the efficiency of organic bulk heterojunction photovoltaic cells with an inverted structure

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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