Engineering high charge transfer n-doping of graphene electrodes and its application to organic electronics

Simon Sanders; Andrea Cabrero-Vilatela; Piran R. Kidambi; Jack A. Alexander-Webber; Christ Weijtens; Philipp Braeuninger-Weimer; Adrianus I. Aria; Malik M. Qasim; Timothy D. Wilkinson; John Robertson; Stephan Hofmann; Jens Meyer

doi:10.1039/c5nr03246f

Engineering high charge transfer n-doping of graphene electrodes and its application to organic electronics

Simon Sanders, Andrea Cabrero-Vilatela, Piran R. Kidambi, Jack A. Alexander-Webber, Christ Weijtens, Philipp Braeuninger-Weimer, Adrianus I. Aria, Malik M. Qasim, Timothy D. Wilkinson, John Robertson, Stephan Hofmann, Jens Meyer

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Abstract

Using thermally evaporated cesium carbonate (Cs2CO3) in an organic matrix, we present a novel strategy for efficient n-doping of monolayer graphene and a ∼90% reduction in its sheet resistance to ∼250 Ohm sq−1. Photoemission spectroscopy confirms the presence of a large interface dipole of ∼0.9 eV between graphene and the Cs2CO3/organic matrix. This leads to a strong charge transfer based doping of graphene with a Fermi level shift of ∼1.0 eV. Using this approach we demonstrate efficient, standard industrial manufacturing process compatible graphene-based inverted organic light emitting diodes on glass and flexible substrates with efficiencies comparable to those of state-of-the-art ITO based devices.

Original language	English
Pages (from-to)	13135-13142
Number of pages	8
Journal	Nanoscale
Volume	7
Issue number	30
DOIs	https://doi.org/10.1039/c5nr03246f
Publication status	Published - 2015
Externally published	Yes

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Sanders, S., Cabrero-Vilatela, A., Kidambi, P. R., Alexander-Webber, J. A., Weijtens, C., Braeuninger-Weimer, P., Aria, A. I., Qasim, M. M., Wilkinson, T. D., Robertson, J., Hofmann, S., & Meyer, J. (2015). Engineering high charge transfer n-doping of graphene electrodes and its application to organic electronics. Nanoscale, 7(30), 13135-13142. https://doi.org/10.1039/c5nr03246f

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title = "Engineering high charge transfer n-doping of graphene electrodes and its application to organic electronics",

abstract = "Using thermally evaporated cesium carbonate (Cs2CO3) in an organic matrix, we present a novel strategy for efficient n-doping of monolayer graphene and a ∼90% reduction in its sheet resistance to ∼250 Ohm sq−1. Photoemission spectroscopy confirms the presence of a large interface dipole of ∼0.9 eV between graphene and the Cs2CO3/organic matrix. This leads to a strong charge transfer based doping of graphene with a Fermi level shift of ∼1.0 eV. Using this approach we demonstrate efficient, standard industrial manufacturing process compatible graphene-based inverted organic light emitting diodes on glass and flexible substrates with efficiencies comparable to those of state-of-the-art ITO based devices.",

author = "Simon Sanders and Andrea Cabrero-Vilatela and Kidambi, {Piran R.} and Alexander-Webber, {Jack A.} and Christ Weijtens and Philipp Braeuninger-Weimer and Aria, {Adrianus I.} and Qasim, {Malik M.} and Wilkinson, {Timothy D.} and John Robertson and Stephan Hofmann and Jens Meyer",

year = "2015",

doi = "10.1039/c5nr03246f",

language = "English",

volume = "7",

pages = "13135--13142",

journal = "Nanoscale",

issn = "2040-3364",

publisher = "Royal Society of Chemistry",

number = "30",

}

Sanders, S, Cabrero-Vilatela, A, Kidambi, PR, Alexander-Webber, JA, Weijtens, C, Braeuninger-Weimer, P, Aria, AI, Qasim, MM, Wilkinson, TD, Robertson, J, Hofmann, S & Meyer, J 2015, 'Engineering high charge transfer n-doping of graphene electrodes and its application to organic electronics', Nanoscale, vol. 7, no. 30, pp. 13135-13142. https://doi.org/10.1039/c5nr03246f

TY - JOUR

T1 - Engineering high charge transfer n-doping of graphene electrodes and its application to organic electronics

AU - Sanders, Simon

AU - Cabrero-Vilatela, Andrea

AU - Kidambi, Piran R.

AU - Alexander-Webber, Jack A.

AU - Weijtens, Christ

AU - Braeuninger-Weimer, Philipp

AU - Aria, Adrianus I.

AU - Qasim, Malik M.

AU - Wilkinson, Timothy D.

AU - Robertson, John

AU - Hofmann, Stephan

AU - Meyer, Jens

PY - 2015

Y1 - 2015

N2 - Using thermally evaporated cesium carbonate (Cs2CO3) in an organic matrix, we present a novel strategy for efficient n-doping of monolayer graphene and a ∼90% reduction in its sheet resistance to ∼250 Ohm sq−1. Photoemission spectroscopy confirms the presence of a large interface dipole of ∼0.9 eV between graphene and the Cs2CO3/organic matrix. This leads to a strong charge transfer based doping of graphene with a Fermi level shift of ∼1.0 eV. Using this approach we demonstrate efficient, standard industrial manufacturing process compatible graphene-based inverted organic light emitting diodes on glass and flexible substrates with efficiencies comparable to those of state-of-the-art ITO based devices.

AB - Using thermally evaporated cesium carbonate (Cs2CO3) in an organic matrix, we present a novel strategy for efficient n-doping of monolayer graphene and a ∼90% reduction in its sheet resistance to ∼250 Ohm sq−1. Photoemission spectroscopy confirms the presence of a large interface dipole of ∼0.9 eV between graphene and the Cs2CO3/organic matrix. This leads to a strong charge transfer based doping of graphene with a Fermi level shift of ∼1.0 eV. Using this approach we demonstrate efficient, standard industrial manufacturing process compatible graphene-based inverted organic light emitting diodes on glass and flexible substrates with efficiencies comparable to those of state-of-the-art ITO based devices.

U2 - 10.1039/c5nr03246f

DO - 10.1039/c5nr03246f

M3 - Article

C2 - 26176814

SN - 2040-3364

VL - 7

SP - 13135

EP - 13142

JO - Nanoscale

JF - Nanoscale

IS - 30

ER -

Engineering high charge transfer n-doping of graphene electrodes and its application to organic electronics

Abstract

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