Measurement of the diffusivity of fullerenes in polymers using bilayer organic field effect transistors

John G. Labram; James Kirkpatrick; Donal D.C. Bradley; Thomas D. Anthopoulos

doi:10.1103/PhysRevB.84.075344

Measurement of the diffusivity of fullerenes in polymers using bilayer organic field effect transistors

John G. Labram^*, James Kirkpatrick, Donal D.C. Bradley, Thomas D. Anthopoulos

^*Corresponding author for this work

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

18 Scopus citations

Abstract

Bilayer poly(3-hexylthiophene):[6,6]-phenyl C₆₁-butyric acid methyl ester (PC₆₁BM) [P3HT:PC₆₁BM] organic field-effect transistors (OFETs) have been fabricated using a bottom-contact, bottom-gate (BCBG) architecture. By annealing these devices and monitoring the magnitude of the electron field-effect mobility, information about the diffusion properties of PC₆₁BM in P3HT can be obtained. Using a solution to the one-dimensional diffusion equation and an application of percolation theory, a relationship between electron field-effect mobility, diffusion coefficient, and annealing time has been obtained. By applying this model to time-dependent mobility measurements, a rough approximation of 5 nm2s^-1 has been made for the diffusion coefficient of PC₆₁BM in P3HT at a temperature of 130°C.

Original language	English (US)
Article number	075344
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.84.075344
State	Published - Aug 18 2011
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.84.075344

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title = "Measurement of the diffusivity of fullerenes in polymers using bilayer organic field effect transistors",

abstract = "Bilayer poly(3-hexylthiophene):[6,6]-phenyl C61-butyric acid methyl ester (PC61BM) [P3HT:PC61BM] organic field-effect transistors (OFETs) have been fabricated using a bottom-contact, bottom-gate (BCBG) architecture. By annealing these devices and monitoring the magnitude of the electron field-effect mobility, information about the diffusion properties of PC61BM in P3HT can be obtained. Using a solution to the one-dimensional diffusion equation and an application of percolation theory, a relationship between electron field-effect mobility, diffusion coefficient, and annealing time has been obtained. By applying this model to time-dependent mobility measurements, a rough approximation of 5 nm2s-1 has been made for the diffusion coefficient of PC61BM in P3HT at a temperature of 130°C.",

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AU - Labram, John G.

AU - Kirkpatrick, James

AU - Bradley, Donal D.C.

AU - Anthopoulos, Thomas D.

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N2 - Bilayer poly(3-hexylthiophene):[6,6]-phenyl C61-butyric acid methyl ester (PC61BM) [P3HT:PC61BM] organic field-effect transistors (OFETs) have been fabricated using a bottom-contact, bottom-gate (BCBG) architecture. By annealing these devices and monitoring the magnitude of the electron field-effect mobility, information about the diffusion properties of PC61BM in P3HT can be obtained. Using a solution to the one-dimensional diffusion equation and an application of percolation theory, a relationship between electron field-effect mobility, diffusion coefficient, and annealing time has been obtained. By applying this model to time-dependent mobility measurements, a rough approximation of 5 nm2s-1 has been made for the diffusion coefficient of PC61BM in P3HT at a temperature of 130°C.

AB - Bilayer poly(3-hexylthiophene):[6,6]-phenyl C61-butyric acid methyl ester (PC61BM) [P3HT:PC61BM] organic field-effect transistors (OFETs) have been fabricated using a bottom-contact, bottom-gate (BCBG) architecture. By annealing these devices and monitoring the magnitude of the electron field-effect mobility, information about the diffusion properties of PC61BM in P3HT can be obtained. Using a solution to the one-dimensional diffusion equation and an application of percolation theory, a relationship between electron field-effect mobility, diffusion coefficient, and annealing time has been obtained. By applying this model to time-dependent mobility measurements, a rough approximation of 5 nm2s-1 has been made for the diffusion coefficient of PC61BM in P3HT at a temperature of 130°C.

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Measurement of the diffusivity of fullerenes in polymers using bilayer organic field effect transistors

Abstract

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