Imaging the electric potential within organic solar cells

Rebecca Saive; Michael Scherer; Christian Mueller; Dominik Daume; Janusz Schinke; Michael Kroeger; Wolfgang Kowalsky

doi:10.1002/adfm.201301315

Imaging the electric potential within organic solar cells

Rebecca Saive^*, Michael Scherer, Christian Mueller, Dominik Daume, Janusz Schinke, Michael Kroeger, Wolfgang Kowalsky

^*Corresponding author for this work

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

35 Citations (Scopus)

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Abstract

The charge transport in organic solar cells is investigated by surface potential measurements via scanning Kelvin probe microscopy. Access to the solar cell's cross-section is gained by milling holes with a focused ion beam which enables the direct scan along the charge transport path. In a study of poly(3-hexylthiophene):1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]C61 (P3HT:PCBM) bulk heterojunction solar cells, the open circuit voltage is built up at the top contact. A comparison of the potential distribution within normal and inverted solar cells under operation exhibits strongly different behaviors, which can be assigned to a difference in interface properties.

Original language	English
Pages (from-to)	5854-5860
Number of pages	7
Journal	Advanced functional materials
Volume	23
Issue number	47
DOIs	https://doi.org/10.1002/adfm.201301315
Publication status	Published - 17 Dec 2013
Externally published	Yes

Keywords

bulk heterojunction
charge transport
focused ion beam
organic electronics
solar cells

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10.1002/adfm.201301315

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title = "Imaging the electric potential within organic solar cells",

abstract = "The charge transport in organic solar cells is investigated by surface potential measurements via scanning Kelvin probe microscopy. Access to the solar cell's cross-section is gained by milling holes with a focused ion beam which enables the direct scan along the charge transport path. In a study of poly(3-hexylthiophene):1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]C61 (P3HT:PCBM) bulk heterojunction solar cells, the open circuit voltage is built up at the top contact. A comparison of the potential distribution within normal and inverted solar cells under operation exhibits strongly different behaviors, which can be assigned to a difference in interface properties.",

keywords = "bulk heterojunction, charge transport, focused ion beam, organic electronics, solar cells",

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AU - Saive, Rebecca

AU - Scherer, Michael

AU - Mueller, Christian

AU - Daume, Dominik

AU - Schinke, Janusz

AU - Kroeger, Michael

AU - Kowalsky, Wolfgang

PY - 2013/12/17

Y1 - 2013/12/17

N2 - The charge transport in organic solar cells is investigated by surface potential measurements via scanning Kelvin probe microscopy. Access to the solar cell's cross-section is gained by milling holes with a focused ion beam which enables the direct scan along the charge transport path. In a study of poly(3-hexylthiophene):1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]C61 (P3HT:PCBM) bulk heterojunction solar cells, the open circuit voltage is built up at the top contact. A comparison of the potential distribution within normal and inverted solar cells under operation exhibits strongly different behaviors, which can be assigned to a difference in interface properties.

AB - The charge transport in organic solar cells is investigated by surface potential measurements via scanning Kelvin probe microscopy. Access to the solar cell's cross-section is gained by milling holes with a focused ion beam which enables the direct scan along the charge transport path. In a study of poly(3-hexylthiophene):1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]C61 (P3HT:PCBM) bulk heterojunction solar cells, the open circuit voltage is built up at the top contact. A comparison of the potential distribution within normal and inverted solar cells under operation exhibits strongly different behaviors, which can be assigned to a difference in interface properties.

KW - bulk heterojunction

KW - charge transport

KW - focused ion beam

KW - organic electronics

KW - solar cells

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DO - 10.1002/adfm.201301315

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EP - 5860

JO - Advanced functional materials

JF - Advanced functional materials

SN - 1616-301X

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Imaging the electric potential within organic solar cells

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Keywords

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