Flexible multilayer inverted polymer light-emitting diodes with a gravure contact printed Cs2 CO3 electron injection layer

Dae Young Chung; Dong Seok Leem; Donal D.C. Bradley; Alasdair J. Campbell

doi:10.1063/1.3560484

Flexible multilayer inverted polymer light-emitting diodes with a gravure contact printed Cs2 CO3 electron injection layer

Dae Young Chung, Dong Seok Leem, Donal D.C. Bradley, Alasdair J. Campbell

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

20 Scopus citations

Abstract

Here we demonstrate high efficiency, flexible inverted polymer light-emitting diodes in which the bottom-contact cesium carbonate electron injection layer is gravure contact printed. The poly(9,9-dioctylfluorene-alt- benzothiadiazole) emissive/electron transport layer, the poly(9,9- dioctylfluorene-alt- N -(4-butylphenyl)-diphenylamine) hole transport/electron blocking layer and the poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) hole injection layer were sequentially spin-coated from solution using orthogonal solvent formulations with appropriate wetting properties. By switching from indium-tin-oxide (ITO) on glass to ITO on poly(ethylene terephthalate) and using gravure contact printing instead of spin-coating, Cs2 CO3 smoothness and morphology was optimized, resulting in an approximately fivefold increase in current efficiency and power efficiency at 100 cd/m2. © 2011 American Institute of Physics.

Original language	English (US)
Journal	Applied Physics Letters
Volume	98
Issue number	10
DOIs	https://doi.org/10.1063/1.3560484
State	Published - Mar 7 2011
Externally published	Yes

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title = "Flexible multilayer inverted polymer light-emitting diodes with a gravure contact printed Cs2 CO3 electron injection layer",

abstract = "Here we demonstrate high efficiency, flexible inverted polymer light-emitting diodes in which the bottom-contact cesium carbonate electron injection layer is gravure contact printed. The poly(9,9-dioctylfluorene-alt- benzothiadiazole) emissive/electron transport layer, the poly(9,9- dioctylfluorene-alt- N -(4-butylphenyl)-diphenylamine) hole transport/electron blocking layer and the poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) hole injection layer were sequentially spin-coated from solution using orthogonal solvent formulations with appropriate wetting properties. By switching from indium-tin-oxide (ITO) on glass to ITO on poly(ethylene terephthalate) and using gravure contact printing instead of spin-coating, Cs2 CO3 smoothness and morphology was optimized, resulting in an approximately fivefold increase in current efficiency and power efficiency at 100 cd/m2. {\textcopyright} 2011 American Institute of Physics.",

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AU - Leem, Dong Seok

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AU - Campbell, Alasdair J.

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PY - 2011/3/7

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N2 - Here we demonstrate high efficiency, flexible inverted polymer light-emitting diodes in which the bottom-contact cesium carbonate electron injection layer is gravure contact printed. The poly(9,9-dioctylfluorene-alt- benzothiadiazole) emissive/electron transport layer, the poly(9,9- dioctylfluorene-alt- N -(4-butylphenyl)-diphenylamine) hole transport/electron blocking layer and the poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) hole injection layer were sequentially spin-coated from solution using orthogonal solvent formulations with appropriate wetting properties. By switching from indium-tin-oxide (ITO) on glass to ITO on poly(ethylene terephthalate) and using gravure contact printing instead of spin-coating, Cs2 CO3 smoothness and morphology was optimized, resulting in an approximately fivefold increase in current efficiency and power efficiency at 100 cd/m2. © 2011 American Institute of Physics.

AB - Here we demonstrate high efficiency, flexible inverted polymer light-emitting diodes in which the bottom-contact cesium carbonate electron injection layer is gravure contact printed. The poly(9,9-dioctylfluorene-alt- benzothiadiazole) emissive/electron transport layer, the poly(9,9- dioctylfluorene-alt- N -(4-butylphenyl)-diphenylamine) hole transport/electron blocking layer and the poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) hole injection layer were sequentially spin-coated from solution using orthogonal solvent formulations with appropriate wetting properties. By switching from indium-tin-oxide (ITO) on glass to ITO on poly(ethylene terephthalate) and using gravure contact printing instead of spin-coating, Cs2 CO3 smoothness and morphology was optimized, resulting in an approximately fivefold increase in current efficiency and power efficiency at 100 cd/m2. © 2011 American Institute of Physics.

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JO - Applied Physics Letters

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Flexible multilayer inverted polymer light-emitting diodes with a gravure contact printed Cs2 CO3 electron injection layer

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