Enhanced & anisotropic charge transport in polymer-based thin-film transistors by guiding polymer growth

Fu Chiao Wu, Cheng Chang Lu, Jrjeng Ruan, Fu Ching Tang, Horng Long Cheng, Wei Yang Chou

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Ideal molecular features and microstructural properties of organic semiconducting thin films are being explored to achieve high-performance organic thin-film transistors (OTFTs). We prepared and processed hexamethylbenzene (HMB)/poly(3-hexylthiophene) (P3HT) mixtures using a thermal gradient system to fabricate P3HT-based OTFTs. In the thermal gradient system, the HMB separated from the HMB/ P3HT mixtures and crystallized along the sample movement direction. The crystallized HMB affected and guided the growth behavior of P3HT at the molecular level. Observations from joint microscopic and spectroscopic analyses revealed that the HMBprocessed P3HT (H-P3HT) thin film possessed anisotropic and improved microstructures, particularly in crystalline domains. The improved molecular features and microstructural properties of the H-P3HT thin film enhanced the intramolecular and intermolecular charge transport by extending the π-conjugation, decreasing the reorganization energy, and strengthening the π-π overlaps. The electrical performance of the H-P3HT OTFT was augmented significantly with respect to that of the spin-coated P3HT OTFT. In addition, the H-P3HT OTFT exhibited an anisotropic charge transport property, correlating with microstructure directionality and resulting from the difference in the directions of the π-π overlaps. This effective and simple technique can be applied to other device types and has the potential to achieve high-performance organic electronic/photonic devices.

Original languageEnglish
Pages (from-to)629-636
Number of pages8
JournalCrystal Growth and Design
Volume17
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

Fingerprint

Thin film transistors
Charge transfer
Polymers
transistors
polymers
thin films
Thin films
Thermal gradients
Semiconducting films
Photonic devices
Microstructure
Transport properties
gradients
microstructure
poly(3-hexylthiophene)
Crystalline materials
conjugation
hexamethylbenzene
transport properties
photonics

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

@article{40caec567f5b489aa9857f5b668f151c,
title = "Enhanced & anisotropic charge transport in polymer-based thin-film transistors by guiding polymer growth",
abstract = "Ideal molecular features and microstructural properties of organic semiconducting thin films are being explored to achieve high-performance organic thin-film transistors (OTFTs). We prepared and processed hexamethylbenzene (HMB)/poly(3-hexylthiophene) (P3HT) mixtures using a thermal gradient system to fabricate P3HT-based OTFTs. In the thermal gradient system, the HMB separated from the HMB/ P3HT mixtures and crystallized along the sample movement direction. The crystallized HMB affected and guided the growth behavior of P3HT at the molecular level. Observations from joint microscopic and spectroscopic analyses revealed that the HMBprocessed P3HT (H-P3HT) thin film possessed anisotropic and improved microstructures, particularly in crystalline domains. The improved molecular features and microstructural properties of the H-P3HT thin film enhanced the intramolecular and intermolecular charge transport by extending the π-conjugation, decreasing the reorganization energy, and strengthening the π-π overlaps. The electrical performance of the H-P3HT OTFT was augmented significantly with respect to that of the spin-coated P3HT OTFT. In addition, the H-P3HT OTFT exhibited an anisotropic charge transport property, correlating with microstructure directionality and resulting from the difference in the directions of the π-π overlaps. This effective and simple technique can be applied to other device types and has the potential to achieve high-performance organic electronic/photonic devices.",
author = "Wu, {Fu Chiao} and Lu, {Cheng Chang} and Jrjeng Ruan and Tang, {Fu Ching} and Cheng, {Horng Long} and Chou, {Wei Yang}",
year = "2017",
month = "2",
day = "1",
doi = "10.1021/acs.cgd.6b01466",
language = "English",
volume = "17",
pages = "629--636",
journal = "Crystal Growth and Design",
issn = "1528-7483",
publisher = "American Chemical Society",
number = "2",

}

Enhanced & anisotropic charge transport in polymer-based thin-film transistors by guiding polymer growth. / Wu, Fu Chiao; Lu, Cheng Chang; Ruan, Jrjeng; Tang, Fu Ching; Cheng, Horng Long; Chou, Wei Yang.

In: Crystal Growth and Design, Vol. 17, No. 2, 01.02.2017, p. 629-636.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Enhanced & anisotropic charge transport in polymer-based thin-film transistors by guiding polymer growth

AU - Wu, Fu Chiao

AU - Lu, Cheng Chang

AU - Ruan, Jrjeng

AU - Tang, Fu Ching

AU - Cheng, Horng Long

AU - Chou, Wei Yang

PY - 2017/2/1

Y1 - 2017/2/1

N2 - Ideal molecular features and microstructural properties of organic semiconducting thin films are being explored to achieve high-performance organic thin-film transistors (OTFTs). We prepared and processed hexamethylbenzene (HMB)/poly(3-hexylthiophene) (P3HT) mixtures using a thermal gradient system to fabricate P3HT-based OTFTs. In the thermal gradient system, the HMB separated from the HMB/ P3HT mixtures and crystallized along the sample movement direction. The crystallized HMB affected and guided the growth behavior of P3HT at the molecular level. Observations from joint microscopic and spectroscopic analyses revealed that the HMBprocessed P3HT (H-P3HT) thin film possessed anisotropic and improved microstructures, particularly in crystalline domains. The improved molecular features and microstructural properties of the H-P3HT thin film enhanced the intramolecular and intermolecular charge transport by extending the π-conjugation, decreasing the reorganization energy, and strengthening the π-π overlaps. The electrical performance of the H-P3HT OTFT was augmented significantly with respect to that of the spin-coated P3HT OTFT. In addition, the H-P3HT OTFT exhibited an anisotropic charge transport property, correlating with microstructure directionality and resulting from the difference in the directions of the π-π overlaps. This effective and simple technique can be applied to other device types and has the potential to achieve high-performance organic electronic/photonic devices.

AB - Ideal molecular features and microstructural properties of organic semiconducting thin films are being explored to achieve high-performance organic thin-film transistors (OTFTs). We prepared and processed hexamethylbenzene (HMB)/poly(3-hexylthiophene) (P3HT) mixtures using a thermal gradient system to fabricate P3HT-based OTFTs. In the thermal gradient system, the HMB separated from the HMB/ P3HT mixtures and crystallized along the sample movement direction. The crystallized HMB affected and guided the growth behavior of P3HT at the molecular level. Observations from joint microscopic and spectroscopic analyses revealed that the HMBprocessed P3HT (H-P3HT) thin film possessed anisotropic and improved microstructures, particularly in crystalline domains. The improved molecular features and microstructural properties of the H-P3HT thin film enhanced the intramolecular and intermolecular charge transport by extending the π-conjugation, decreasing the reorganization energy, and strengthening the π-π overlaps. The electrical performance of the H-P3HT OTFT was augmented significantly with respect to that of the spin-coated P3HT OTFT. In addition, the H-P3HT OTFT exhibited an anisotropic charge transport property, correlating with microstructure directionality and resulting from the difference in the directions of the π-π overlaps. This effective and simple technique can be applied to other device types and has the potential to achieve high-performance organic electronic/photonic devices.

UR - http://www.scopus.com/inward/record.url?scp=85011423457&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85011423457&partnerID=8YFLogxK

U2 - 10.1021/acs.cgd.6b01466

DO - 10.1021/acs.cgd.6b01466

M3 - Article

AN - SCOPUS:85011423457

VL - 17

SP - 629

EP - 636

JO - Crystal Growth and Design

JF - Crystal Growth and Design

SN - 1528-7483

IS - 2

ER -