Polymer blended small molecule organic field effect transistors with improved device-to-device uniformity and operational stability

Yong Hoon Kim; John E. Anthony; Sung Kyu Park

doi:10.1016/j.orgel.2012.03.016

Polymer blended small molecule organic field effect transistors with improved device-to-device uniformity and operational stability

Yong Hoon Kim, John E. Anthony, Sung Kyu Park

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

48 Scopus citations

Abstract

We report high performance organic thin-film transistors (OTFTs) with improved device-to-device uniformity and operational stability using polymer-blended small molecule organic semiconductor, 2,8-difluoro-5,11- bis(triethylsilylethynyl) anthradithiophene (diF-TESADT). The diF-TESADT blended with poly(α-methylstyrene) was spin-cast to form bottom-contact OTFTs, and an average carrier mobility of more than 0.16 cm²/V s with more uniform surface morphology and device-to-device uniformity compared to neat diF-TESADT devices were achieved. Additionally, the polymer-blended OTFTs have shown improved operational stability under gate bias-stress possibly due to blocking of ambient oxygen and moisture by vertically separated insulating matrix polymer.

Original language	English
Pages (from-to)	1152-1157
Number of pages	6
Journal	Organic Electronics
Volume	13
Issue number	7
DOIs	https://doi.org/10.1016/j.orgel.2012.03.016
State	Published - Jul 2012

Bibliographical note

Funding Information:
This work was supported in part by Basic Science Research Program through a National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science, and Technology (No. 2010-0002623 ), and also was financially supported by the Ministry of Knowledge Economy (MKE), Korea Institute for Advancement of Technology (KIAT) through the Inter-ER Cooperation Projects.

Keywords

Device-to-device uniformity
Operational stability
Organic field effect transistor
Polymer blending

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
General Chemistry
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.orgel.2012.03.016

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@article{14999039da8747f18806450f7c470c07,

title = "Polymer blended small molecule organic field effect transistors with improved device-to-device uniformity and operational stability",

abstract = "We report high performance organic thin-film transistors (OTFTs) with improved device-to-device uniformity and operational stability using polymer-blended small molecule organic semiconductor, 2,8-difluoro-5,11- bis(triethylsilylethynyl) anthradithiophene (diF-TESADT). The diF-TESADT blended with poly(α-methylstyrene) was spin-cast to form bottom-contact OTFTs, and an average carrier mobility of more than 0.16 cm2/V s with more uniform surface morphology and device-to-device uniformity compared to neat diF-TESADT devices were achieved. Additionally, the polymer-blended OTFTs have shown improved operational stability under gate bias-stress possibly due to blocking of ambient oxygen and moisture by vertically separated insulating matrix polymer.",

keywords = "Device-to-device uniformity, Operational stability, Organic field effect transistor, Polymer blending",

author = "Kim, {Yong Hoon} and Anthony, {John E.} and Park, {Sung Kyu}",

note = "Funding Information: This work was supported in part by Basic Science Research Program through a National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science, and Technology (No. 2010-0002623 ), and also was financially supported by the Ministry of Knowledge Economy (MKE), Korea Institute for Advancement of Technology (KIAT) through the Inter-ER Cooperation Projects.",

year = "2012",

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doi = "10.1016/j.orgel.2012.03.016",

language = "English",

volume = "13",

pages = "1152--1157",

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T1 - Polymer blended small molecule organic field effect transistors with improved device-to-device uniformity and operational stability

AU - Kim, Yong Hoon

AU - Anthony, John E.

AU - Park, Sung Kyu

N1 - Funding Information: This work was supported in part by Basic Science Research Program through a National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science, and Technology (No. 2010-0002623 ), and also was financially supported by the Ministry of Knowledge Economy (MKE), Korea Institute for Advancement of Technology (KIAT) through the Inter-ER Cooperation Projects.

PY - 2012/7

Y1 - 2012/7

N2 - We report high performance organic thin-film transistors (OTFTs) with improved device-to-device uniformity and operational stability using polymer-blended small molecule organic semiconductor, 2,8-difluoro-5,11- bis(triethylsilylethynyl) anthradithiophene (diF-TESADT). The diF-TESADT blended with poly(α-methylstyrene) was spin-cast to form bottom-contact OTFTs, and an average carrier mobility of more than 0.16 cm2/V s with more uniform surface morphology and device-to-device uniformity compared to neat diF-TESADT devices were achieved. Additionally, the polymer-blended OTFTs have shown improved operational stability under gate bias-stress possibly due to blocking of ambient oxygen and moisture by vertically separated insulating matrix polymer.

AB - We report high performance organic thin-film transistors (OTFTs) with improved device-to-device uniformity and operational stability using polymer-blended small molecule organic semiconductor, 2,8-difluoro-5,11- bis(triethylsilylethynyl) anthradithiophene (diF-TESADT). The diF-TESADT blended with poly(α-methylstyrene) was spin-cast to form bottom-contact OTFTs, and an average carrier mobility of more than 0.16 cm2/V s with more uniform surface morphology and device-to-device uniformity compared to neat diF-TESADT devices were achieved. Additionally, the polymer-blended OTFTs have shown improved operational stability under gate bias-stress possibly due to blocking of ambient oxygen and moisture by vertically separated insulating matrix polymer.

KW - Device-to-device uniformity

KW - Operational stability

KW - Organic field effect transistor

KW - Polymer blending

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VL - 13

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EP - 1157

JO - Organic Electronics

JF - Organic Electronics

IS - 7

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Polymer blended small molecule organic field effect transistors with improved device-to-device uniformity and operational stability

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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