Effect of side chain length on molecular ordering and field-effect mobility in poly(3-alkylthiophene) transistors

Yeong Don Park; Do Hwan Kim; Yunseok Jang; Jeong Ho Cho; Minkyu Hwang; Hwa Sung Lee; Jung Ah Lim; Kilwon Cho

doi:10.1016/j.orgel.2006.07.007

Effect of side chain length on molecular ordering and field-effect mobility in poly(3-alkylthiophene) transistors

Yeong Don Park, Do Hwan Kim, Yunseok Jang, Jeong Ho Cho, Minkyu Hwang, Hwa Sung Lee, Jung Ah Lim, Kilwon Cho

Department of Chemical and Biomolecular Engineering

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

143 Citations (Scopus)

Abstract

The effect of alkyl side chain length on the molecular ordering and electrical properties of regioregular poly(3-alkylthiophene) (P3AT)-based field-effect transistors (FETs) was investigated using P3ATs with various alkyl side chain lengths (-(CH₂)_nCH₃, n = 3, 5, and 7) as active materials. The inner structures and surface morphologies of the P3ATs thin films fabricated on an insulator substrate were characterized, and the electrical properties of FETs based on these films were correlated with the structure and alkyl chain length of the P3ATs. The FET based on poly(3-butylthiophene), which has the shortest alkyl side chains among the three P3ATs considered, showed the highest field-effect mobility, possibly because the film formed from molecules with short butyl side chains had a higher density of π-stacked ordered structures in the charge transport region.

Original language	English
Pages (from-to)	514-520
Number of pages	7
Journal	Organic Electronics
Volume	7
Issue number	6
DOIs	https://doi.org/10.1016/j.orgel.2006.07.007
Publication status	Published - 2006 Dec

Bibliographical note

Funding Information:
This work was supported by the National Research Laboratory Program and ERC Program (R11-2003-006-03 005-0) of the MOST/KOSEF, a grant (F0 004 022) from the Information Display R&D Center under the 21st Century Frontier R&D Program and the Regional Technology Innovation Program (RTI04-01-04) of the MOCIE, and the BK21 Program of the Ministry of Education and Human Resources Development of Korea. The authors are grateful to the Pohang Accelerator Laboratory for access to synchrotron radiation at the 3C2, 4C2, and 8C1 beamlines.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Chemistry(all)
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.orgel.2006.07.007

Cite this

@article{7982cdaeaac44492a354292368c61ff3,

title = "Effect of side chain length on molecular ordering and field-effect mobility in poly(3-alkylthiophene) transistors",

abstract = "The effect of alkyl side chain length on the molecular ordering and electrical properties of regioregular poly(3-alkylthiophene) (P3AT)-based field-effect transistors (FETs) was investigated using P3ATs with various alkyl side chain lengths (-(CH2)nCH3, n = 3, 5, and 7) as active materials. The inner structures and surface morphologies of the P3ATs thin films fabricated on an insulator substrate were characterized, and the electrical properties of FETs based on these films were correlated with the structure and alkyl chain length of the P3ATs. The FET based on poly(3-butylthiophene), which has the shortest alkyl side chains among the three P3ATs considered, showed the highest field-effect mobility, possibly because the film formed from molecules with short butyl side chains had a higher density of π-stacked ordered structures in the charge transport region.",

author = "Park, {Yeong Don} and Kim, {Do Hwan} and Yunseok Jang and Cho, {Jeong Ho} and Minkyu Hwang and Lee, {Hwa Sung} and Lim, {Jung Ah} and Kilwon Cho",

note = "Funding Information: This work was supported by the National Research Laboratory Program and ERC Program (R11-2003-006-03 005-0) of the MOST/KOSEF, a grant (F0 004 022) from the Information Display R&D Center under the 21st Century Frontier R&D Program and the Regional Technology Innovation Program (RTI04-01-04) of the MOCIE, and the BK21 Program of the Ministry of Education and Human Resources Development of Korea. The authors are grateful to the Pohang Accelerator Laboratory for access to synchrotron radiation at the 3C2, 4C2, and 8C1 beamlines.",

year = "2006",

month = dec,

doi = "10.1016/j.orgel.2006.07.007",

language = "English",

volume = "7",

pages = "514--520",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier",

number = "6",

}

TY - JOUR

T1 - Effect of side chain length on molecular ordering and field-effect mobility in poly(3-alkylthiophene) transistors

AU - Park, Yeong Don

AU - Kim, Do Hwan

AU - Jang, Yunseok

AU - Cho, Jeong Ho

AU - Hwang, Minkyu

AU - Lee, Hwa Sung

AU - Lim, Jung Ah

AU - Cho, Kilwon

N1 - Funding Information: This work was supported by the National Research Laboratory Program and ERC Program (R11-2003-006-03 005-0) of the MOST/KOSEF, a grant (F0 004 022) from the Information Display R&D Center under the 21st Century Frontier R&D Program and the Regional Technology Innovation Program (RTI04-01-04) of the MOCIE, and the BK21 Program of the Ministry of Education and Human Resources Development of Korea. The authors are grateful to the Pohang Accelerator Laboratory for access to synchrotron radiation at the 3C2, 4C2, and 8C1 beamlines.

PY - 2006/12

Y1 - 2006/12

N2 - The effect of alkyl side chain length on the molecular ordering and electrical properties of regioregular poly(3-alkylthiophene) (P3AT)-based field-effect transistors (FETs) was investigated using P3ATs with various alkyl side chain lengths (-(CH2)nCH3, n = 3, 5, and 7) as active materials. The inner structures and surface morphologies of the P3ATs thin films fabricated on an insulator substrate were characterized, and the electrical properties of FETs based on these films were correlated with the structure and alkyl chain length of the P3ATs. The FET based on poly(3-butylthiophene), which has the shortest alkyl side chains among the three P3ATs considered, showed the highest field-effect mobility, possibly because the film formed from molecules with short butyl side chains had a higher density of π-stacked ordered structures in the charge transport region.

AB - The effect of alkyl side chain length on the molecular ordering and electrical properties of regioregular poly(3-alkylthiophene) (P3AT)-based field-effect transistors (FETs) was investigated using P3ATs with various alkyl side chain lengths (-(CH2)nCH3, n = 3, 5, and 7) as active materials. The inner structures and surface morphologies of the P3ATs thin films fabricated on an insulator substrate were characterized, and the electrical properties of FETs based on these films were correlated with the structure and alkyl chain length of the P3ATs. The FET based on poly(3-butylthiophene), which has the shortest alkyl side chains among the three P3ATs considered, showed the highest field-effect mobility, possibly because the film formed from molecules with short butyl side chains had a higher density of π-stacked ordered structures in the charge transport region.

UR - http://www.scopus.com/inward/record.url?scp=33750987068&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33750987068&partnerID=8YFLogxK

U2 - 10.1016/j.orgel.2006.07.007

DO - 10.1016/j.orgel.2006.07.007

M3 - Article

AN - SCOPUS:33750987068

SN - 1566-1199

VL - 7

SP - 514

EP - 520

JO - Organic Electronics

JF - Organic Electronics

IS - 6

ER -

Effect of side chain length on molecular ordering and field-effect mobility in poly(3-alkylthiophene) transistors

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this