Elucidating the interplay between dark current coupling and open circuit voltage in organic photovoltaics

Patrick Erwin; Mark E. Thompson

doi:10.1063/1.3595679

Elucidating the interplay between dark current coupling and open circuit voltage in organic photovoltaics

Patrick Erwin, Mark E. Thompson

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

49 Scopus citations

Abstract

A short series of alkyl substituted perylenediimides (PDIs) with varying steric bulk are used to demonstrate the relationship between molecular structure, materials properties, and performance characteristics in organic photovoltaics. Devices were made with the structure indium tin oxide/copper phthalocyanine (200 Å)/PDI (200 Å)/bathocuproine (100 Å)/aluminum (1000 Å). We found that PDIs with larger substituents produced higher open circuit voltages (VOC's) despite the donor acceptor interface gap (Δ EDA) remaining unchanged. Additionally, series resistance was increased simultaneously with VOC the effect of reducing short circuit current, making the addition of steric bulk a tradeoff that needs to be balanced to optimize power conversion efficiency. © 2011 American Institute of Physics.

Original language	English (US)
Pages (from-to)	223305
Journal	Applied Physics Letters
Volume	98
Issue number	22
DOIs	https://doi.org/10.1063/1.3595679
State	Published - Jun 4 2011
Externally published	Yes

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10.1063/1.3595679

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title = "Elucidating the interplay between dark current coupling and open circuit voltage in organic photovoltaics",

abstract = "A short series of alkyl substituted perylenediimides (PDIs) with varying steric bulk are used to demonstrate the relationship between molecular structure, materials properties, and performance characteristics in organic photovoltaics. Devices were made with the structure indium tin oxide/copper phthalocyanine (200 {\AA})/PDI (200 {\AA})/bathocuproine (100 {\AA})/aluminum (1000 {\AA}). We found that PDIs with larger substituents produced higher open circuit voltages (VOC's) despite the donor acceptor interface gap (Δ EDA) remaining unchanged. Additionally, series resistance was increased simultaneously with VOC the effect of reducing short circuit current, making the addition of steric bulk a tradeoff that needs to be balanced to optimize power conversion efficiency. {\textcopyright} 2011 American Institute of Physics.",

author = "Patrick Erwin and Thompson, {Mark E.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): GPEC-2006, KUS-C1-015-21 Acknowledgements: The authors thank Cody W. Shlenker and M. Dolores Perez for helpful discussion and acknowledge the Global Photonic Energy Corporation (Award No. GPEC-2006) and the Center for Advanced Molecular Photovoltaics (Award No. KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST). This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2011",

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doi = "10.1063/1.3595679",

language = "English (US)",

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AU - Erwin, Patrick

AU - Thompson, Mark E.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): GPEC-2006, KUS-C1-015-21 Acknowledgements: The authors thank Cody W. Shlenker and M. Dolores Perez for helpful discussion and acknowledge the Global Photonic Energy Corporation (Award No. GPEC-2006) and the Center for Advanced Molecular Photovoltaics (Award No. KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST). This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2011/6/4

Y1 - 2011/6/4

N2 - A short series of alkyl substituted perylenediimides (PDIs) with varying steric bulk are used to demonstrate the relationship between molecular structure, materials properties, and performance characteristics in organic photovoltaics. Devices were made with the structure indium tin oxide/copper phthalocyanine (200 Å)/PDI (200 Å)/bathocuproine (100 Å)/aluminum (1000 Å). We found that PDIs with larger substituents produced higher open circuit voltages (VOC's) despite the donor acceptor interface gap (Δ EDA) remaining unchanged. Additionally, series resistance was increased simultaneously with VOC the effect of reducing short circuit current, making the addition of steric bulk a tradeoff that needs to be balanced to optimize power conversion efficiency. © 2011 American Institute of Physics.

AB - A short series of alkyl substituted perylenediimides (PDIs) with varying steric bulk are used to demonstrate the relationship between molecular structure, materials properties, and performance characteristics in organic photovoltaics. Devices were made with the structure indium tin oxide/copper phthalocyanine (200 Å)/PDI (200 Å)/bathocuproine (100 Å)/aluminum (1000 Å). We found that PDIs with larger substituents produced higher open circuit voltages (VOC's) despite the donor acceptor interface gap (Δ EDA) remaining unchanged. Additionally, series resistance was increased simultaneously with VOC the effect of reducing short circuit current, making the addition of steric bulk a tradeoff that needs to be balanced to optimize power conversion efficiency. © 2011 American Institute of Physics.

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DO - 10.1063/1.3595679

M3 - Article

SN - 0003-6951

VL - 98

SP - 223305

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

ER -

Elucidating the interplay between dark current coupling and open circuit voltage in organic photovoltaics

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