Photoreactive π-conjugated star-shaped molecules for the organic field-effect transistor

Mai Ha Hoang; Min Ju Cho; Dae Cheol Kim; Kyung Hwan Kim; Ji Won Shin; Mi Yeon Cho; Jin soo Joo; Dong Hoon Choi

doi:10.1016/j.orgel.2009.02.021

Photoreactive π-conjugated star-shaped molecules for the organic field-effect transistor

Mai Ha Hoang, Min Ju Cho, Dae Cheol Kim, Kyung Hwan Kim, Ji Won Shin, Mi Yeon Cho, Jin soo Joo, Dong Hoon Choi

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

20 Citations (Scopus)

Abstract

A number of semiconducting organic molecules capable of wet processing exhibit high carrier mobility and current modulation. In this work, we synthesized photopatternable π-conjugated star-shaped molecules and characterized their physical properties. The solubility of the synthesized molecules is very good for solution processing. The synthesized organic semiconducting multi-branched molecules are capable of photopatterning by virtue of photopolymerization of the reactive pentadienyl end groups. The transistor devices using these molecules provided a field-effect mobility of 1.3(±0.2) × 10^-3-3.7(±0.5) × 10^-3 cm² V^-1 s^-1 as well as a high current on/off ratio (I_on/off > 10³) and a low threshold voltage. In the case of the photoreactive star-shaped conjugated molecule HP2P, it was found that field-effect mobility was maintained even after the photocrosslinking process. This result can be used in the design of photopatternable semiconductor molecules for thin-film transistor electronic applications.

Original language	English
Pages (from-to)	607-617
Number of pages	11
Journal	Organic Electronics
Volume	10
Issue number	4
DOIs	https://doi.org/10.1016/j.orgel.2009.02.021
Publication status	Published - 2009 Jul

Bibliographical note

Funding Information:
This research work was supported by 21st century Frontier Research Program (2008) and LG-display Co. Ltd. (2008). Particularly, M.J. Cho acknowledges the financial support by the Seoul R&BD Program (2008–2009).

Keywords

Carrier mobility
Organic field-effect transistor
Photoreactive
Star-shaped molecule

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.2009.02.021

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title = "Photoreactive π-conjugated star-shaped molecules for the organic field-effect transistor",

abstract = "A number of semiconducting organic molecules capable of wet processing exhibit high carrier mobility and current modulation. In this work, we synthesized photopatternable π-conjugated star-shaped molecules and characterized their physical properties. The solubility of the synthesized molecules is very good for solution processing. The synthesized organic semiconducting multi-branched molecules are capable of photopatterning by virtue of photopolymerization of the reactive pentadienyl end groups. The transistor devices using these molecules provided a field-effect mobility of 1.3(±0.2) × 10-3-3.7(±0.5) × 10-3 cm2 V-1 s-1 as well as a high current on/off ratio (Ion/off > 103) and a low threshold voltage. In the case of the photoreactive star-shaped conjugated molecule HP2P, it was found that field-effect mobility was maintained even after the photocrosslinking process. This result can be used in the design of photopatternable semiconductor molecules for thin-film transistor electronic applications.",

keywords = "Carrier mobility, Organic field-effect transistor, Photoreactive, Star-shaped molecule",

author = "Hoang, {Mai Ha} and Cho, {Min Ju} and Kim, {Dae Cheol} and Kim, {Kyung Hwan} and Shin, {Ji Won} and Cho, {Mi Yeon} and Joo, {Jin soo} and Choi, {Dong Hoon}",

note = "Funding Information: This research work was supported by 21st century Frontier Research Program (2008) and LG-display Co. Ltd. (2008). Particularly, M.J. Cho acknowledges the financial support by the Seoul R&BD Program (2008–2009).",

year = "2009",

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doi = "10.1016/j.orgel.2009.02.021",

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AU - Hoang, Mai Ha

AU - Cho, Min Ju

AU - Kim, Dae Cheol

AU - Kim, Kyung Hwan

AU - Shin, Ji Won

AU - Cho, Mi Yeon

AU - Joo, Jin soo

AU - Choi, Dong Hoon

N1 - Funding Information: This research work was supported by 21st century Frontier Research Program (2008) and LG-display Co. Ltd. (2008). Particularly, M.J. Cho acknowledges the financial support by the Seoul R&BD Program (2008–2009).

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N2 - A number of semiconducting organic molecules capable of wet processing exhibit high carrier mobility and current modulation. In this work, we synthesized photopatternable π-conjugated star-shaped molecules and characterized their physical properties. The solubility of the synthesized molecules is very good for solution processing. The synthesized organic semiconducting multi-branched molecules are capable of photopatterning by virtue of photopolymerization of the reactive pentadienyl end groups. The transistor devices using these molecules provided a field-effect mobility of 1.3(±0.2) × 10-3-3.7(±0.5) × 10-3 cm2 V-1 s-1 as well as a high current on/off ratio (Ion/off > 103) and a low threshold voltage. In the case of the photoreactive star-shaped conjugated molecule HP2P, it was found that field-effect mobility was maintained even after the photocrosslinking process. This result can be used in the design of photopatternable semiconductor molecules for thin-film transistor electronic applications.

AB - A number of semiconducting organic molecules capable of wet processing exhibit high carrier mobility and current modulation. In this work, we synthesized photopatternable π-conjugated star-shaped molecules and characterized their physical properties. The solubility of the synthesized molecules is very good for solution processing. The synthesized organic semiconducting multi-branched molecules are capable of photopatterning by virtue of photopolymerization of the reactive pentadienyl end groups. The transistor devices using these molecules provided a field-effect mobility of 1.3(±0.2) × 10-3-3.7(±0.5) × 10-3 cm2 V-1 s-1 as well as a high current on/off ratio (Ion/off > 103) and a low threshold voltage. In the case of the photoreactive star-shaped conjugated molecule HP2P, it was found that field-effect mobility was maintained even after the photocrosslinking process. This result can be used in the design of photopatternable semiconductor molecules for thin-film transistor electronic applications.

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Photoreactive π-conjugated star-shaped molecules for the organic field-effect transistor

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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