New thermally cross-linkable polymer and its application as a hole-transporting layer for solution processed multilayer organic light emitting diodes

Biwu Ma; Frank Lauterwasser; Lan Deng; C. Sebastian Zonte; Bumjoon J. Kim; Jean M.J. Fréchet; Carsten Borek; Mark E. Thompson

doi:10.1021/cm0715500

New thermally cross-linkable polymer and its application as a hole-transporting layer for solution processed multilayer organic light emitting diodes

Biwu Ma, Frank Lauterwasser, Lan Deng, C. Sebastian Zonte, Bumjoon J. Kim, Jean M.J. Fréchet^*, Carsten Borek, Mark E. Thompson

^*Corresponding author for this work

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

125 Scopus citations

Abstract

A new thermally cross-linkable copolymer containing reactive benzocyclobutene (BCB) units and the well-known hole-transporting moiety N,N′-bis(3-methylphenyl)-N,N′-diphenylbenzidine) (TPD) was synthesized and characterized. Thermal annealing of spun-cast films of the copolymer, followed by cross-linking at 200°C, led to insoluble polymer films with a smooth surface. Green emitting fluorescent OLEDs were fabricated using the new cross-linkable polymer and compared with conventionally prepared devices. Using the thermally cross-linked copolymer as a hole-transporting layer, solution processed multilayer light emitting diodes were prepared that exhibited high performance with 10.4% external quantum efficiency at a brightness of 350 cd/m².

Original language	English (US)
Pages (from-to)	4827-4832
Number of pages	6
Journal	Chemistry of Materials
Volume	19
Issue number	19
DOIs	https://doi.org/10.1021/cm0715500
State	Published - Sep 18 2007
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm0715500

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title = "New thermally cross-linkable polymer and its application as a hole-transporting layer for solution processed multilayer organic light emitting diodes",

abstract = "A new thermally cross-linkable copolymer containing reactive benzocyclobutene (BCB) units and the well-known hole-transporting moiety N,N′-bis(3-methylphenyl)-N,N′-diphenylbenzidine) (TPD) was synthesized and characterized. Thermal annealing of spun-cast films of the copolymer, followed by cross-linking at 200°C, led to insoluble polymer films with a smooth surface. Green emitting fluorescent OLEDs were fabricated using the new cross-linkable polymer and compared with conventionally prepared devices. Using the thermally cross-linked copolymer as a hole-transporting layer, solution processed multilayer light emitting diodes were prepared that exhibited high performance with 10.4% external quantum efficiency at a brightness of 350 cd/m2.",

author = "Biwu Ma and Frank Lauterwasser and Lan Deng and Zonte, {C. Sebastian} and Kim, {Bumjoon J.} and Fr{\'e}chet, {Jean M.J.} and Carsten Borek and Thompson, {Mark E.}",

year = "2007",

month = sep,

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doi = "10.1021/cm0715500",

language = "English (US)",

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pages = "4827--4832",

journal = "Chemistry of Materials",

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T1 - New thermally cross-linkable polymer and its application as a hole-transporting layer for solution processed multilayer organic light emitting diodes

AU - Ma, Biwu

AU - Lauterwasser, Frank

AU - Deng, Lan

AU - Zonte, C. Sebastian

AU - Kim, Bumjoon J.

AU - Fréchet, Jean M.J.

AU - Borek, Carsten

AU - Thompson, Mark E.

PY - 2007/9/18

Y1 - 2007/9/18

N2 - A new thermally cross-linkable copolymer containing reactive benzocyclobutene (BCB) units and the well-known hole-transporting moiety N,N′-bis(3-methylphenyl)-N,N′-diphenylbenzidine) (TPD) was synthesized and characterized. Thermal annealing of spun-cast films of the copolymer, followed by cross-linking at 200°C, led to insoluble polymer films with a smooth surface. Green emitting fluorescent OLEDs were fabricated using the new cross-linkable polymer and compared with conventionally prepared devices. Using the thermally cross-linked copolymer as a hole-transporting layer, solution processed multilayer light emitting diodes were prepared that exhibited high performance with 10.4% external quantum efficiency at a brightness of 350 cd/m2.

AB - A new thermally cross-linkable copolymer containing reactive benzocyclobutene (BCB) units and the well-known hole-transporting moiety N,N′-bis(3-methylphenyl)-N,N′-diphenylbenzidine) (TPD) was synthesized and characterized. Thermal annealing of spun-cast films of the copolymer, followed by cross-linking at 200°C, led to insoluble polymer films with a smooth surface. Green emitting fluorescent OLEDs were fabricated using the new cross-linkable polymer and compared with conventionally prepared devices. Using the thermally cross-linked copolymer as a hole-transporting layer, solution processed multilayer light emitting diodes were prepared that exhibited high performance with 10.4% external quantum efficiency at a brightness of 350 cd/m2.

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U2 - 10.1021/cm0715500

DO - 10.1021/cm0715500

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JO - Chemistry of Materials

JF - Chemistry of Materials

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ER -

New thermally cross-linkable polymer and its application as a hole-transporting layer for solution processed multilayer organic light emitting diodes

Abstract

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