Effective work function modulation of SWCNT-AZO NP hybrid electrodes in fully solution-processed flexible metal-oxide thin film transistors

Su Jeong Lee, Jieun Ko, Jee Ho Park, Jung Han Kim, Gee Sung Chae, Hong Koo Baik, Youn Sang Kim, Jae Min Myoung

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Work function modulation of electrode materials is a crucial factor for achieving superior performance in transparent and flexible device applications. In this work, aluminum-doped zinc-oxide nanoparticles (AZO NPs) with a low work function were introduced in single-walled carbon nanotube (SWCNT) transparent electrodes to achieve an Ohmic contact with an indium-oxide (In2O3) active layer. These SWCNT-AZO NP hybrid electrodes exhibited a low contact resistance with the solution-processed In2O3 active layer, due to the low work function of the AZO NPs physisorbed on the SWCNTs. The 50 nm thick SWCNT-AZO NP hybrid films showed a considerably low electrical resistance of 214.5 Ω sq-1, an optical transmittance of 82.1% and a work function of 4.57 eV. By using these materials as the source and drain electrodes, fully solution-processed In2O3 thin film transistors (TFTs) were fabricated, and they showed excellent device performance. Furthermore, the fully solution-processed flexible In2O3 TFTs with these SWCNT-AZO NP hybrid electrodes exhibited only a 2.02% decrease in the field effect mobility after 1000 cycles of repeated bending stress at a radius of curvature of 3 mm.

Original languageEnglish
Pages (from-to)8121-8126
Number of pages6
JournalJournal of Materials Chemistry C
Volume3
Issue number31
DOIs
Publication statusPublished - 2015 Aug 21

Fingerprint

Zinc Oxide
Single-walled carbon nanotubes (SWCN)
Thin film transistors
Zinc oxide
Aluminum
Oxide films
Metals
Modulation
Nanoparticles
Electrodes
Acoustic impedance
Ohmic contacts
Opacity
Contact resistance
Indium
Oxides

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Cite this

Lee, Su Jeong ; Ko, Jieun ; Park, Jee Ho ; Kim, Jung Han ; Chae, Gee Sung ; Baik, Hong Koo ; Kim, Youn Sang ; Myoung, Jae Min. / Effective work function modulation of SWCNT-AZO NP hybrid electrodes in fully solution-processed flexible metal-oxide thin film transistors. In: Journal of Materials Chemistry C. 2015 ; Vol. 3, No. 31. pp. 8121-8126.
@article{58429b9ce8a0461986a646201ac2fc4d,
title = "Effective work function modulation of SWCNT-AZO NP hybrid electrodes in fully solution-processed flexible metal-oxide thin film transistors",
abstract = "Work function modulation of electrode materials is a crucial factor for achieving superior performance in transparent and flexible device applications. In this work, aluminum-doped zinc-oxide nanoparticles (AZO NPs) with a low work function were introduced in single-walled carbon nanotube (SWCNT) transparent electrodes to achieve an Ohmic contact with an indium-oxide (In2O3) active layer. These SWCNT-AZO NP hybrid electrodes exhibited a low contact resistance with the solution-processed In2O3 active layer, due to the low work function of the AZO NPs physisorbed on the SWCNTs. The 50 nm thick SWCNT-AZO NP hybrid films showed a considerably low electrical resistance of 214.5 Ω sq-1, an optical transmittance of 82.1{\%} and a work function of 4.57 eV. By using these materials as the source and drain electrodes, fully solution-processed In2O3 thin film transistors (TFTs) were fabricated, and they showed excellent device performance. Furthermore, the fully solution-processed flexible In2O3 TFTs with these SWCNT-AZO NP hybrid electrodes exhibited only a 2.02{\%} decrease in the field effect mobility after 1000 cycles of repeated bending stress at a radius of curvature of 3 mm.",
author = "Lee, {Su Jeong} and Jieun Ko and Park, {Jee Ho} and Kim, {Jung Han} and Chae, {Gee Sung} and Baik, {Hong Koo} and Kim, {Youn Sang} and Myoung, {Jae Min}",
year = "2015",
month = "8",
day = "21",
doi = "10.1039/c5tc01481f",
language = "English",
volume = "3",
pages = "8121--8126",
journal = "Journal of Materials Chemistry C",
issn = "2050-7526",
publisher = "Royal Society of Chemistry",
number = "31",

}

Effective work function modulation of SWCNT-AZO NP hybrid electrodes in fully solution-processed flexible metal-oxide thin film transistors. / Lee, Su Jeong; Ko, Jieun; Park, Jee Ho; Kim, Jung Han; Chae, Gee Sung; Baik, Hong Koo; Kim, Youn Sang; Myoung, Jae Min.

In: Journal of Materials Chemistry C, Vol. 3, No. 31, 21.08.2015, p. 8121-8126.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effective work function modulation of SWCNT-AZO NP hybrid electrodes in fully solution-processed flexible metal-oxide thin film transistors

AU - Lee, Su Jeong

AU - Ko, Jieun

AU - Park, Jee Ho

AU - Kim, Jung Han

AU - Chae, Gee Sung

AU - Baik, Hong Koo

AU - Kim, Youn Sang

AU - Myoung, Jae Min

PY - 2015/8/21

Y1 - 2015/8/21

N2 - Work function modulation of electrode materials is a crucial factor for achieving superior performance in transparent and flexible device applications. In this work, aluminum-doped zinc-oxide nanoparticles (AZO NPs) with a low work function were introduced in single-walled carbon nanotube (SWCNT) transparent electrodes to achieve an Ohmic contact with an indium-oxide (In2O3) active layer. These SWCNT-AZO NP hybrid electrodes exhibited a low contact resistance with the solution-processed In2O3 active layer, due to the low work function of the AZO NPs physisorbed on the SWCNTs. The 50 nm thick SWCNT-AZO NP hybrid films showed a considerably low electrical resistance of 214.5 Ω sq-1, an optical transmittance of 82.1% and a work function of 4.57 eV. By using these materials as the source and drain electrodes, fully solution-processed In2O3 thin film transistors (TFTs) were fabricated, and they showed excellent device performance. Furthermore, the fully solution-processed flexible In2O3 TFTs with these SWCNT-AZO NP hybrid electrodes exhibited only a 2.02% decrease in the field effect mobility after 1000 cycles of repeated bending stress at a radius of curvature of 3 mm.

AB - Work function modulation of electrode materials is a crucial factor for achieving superior performance in transparent and flexible device applications. In this work, aluminum-doped zinc-oxide nanoparticles (AZO NPs) with a low work function were introduced in single-walled carbon nanotube (SWCNT) transparent electrodes to achieve an Ohmic contact with an indium-oxide (In2O3) active layer. These SWCNT-AZO NP hybrid electrodes exhibited a low contact resistance with the solution-processed In2O3 active layer, due to the low work function of the AZO NPs physisorbed on the SWCNTs. The 50 nm thick SWCNT-AZO NP hybrid films showed a considerably low electrical resistance of 214.5 Ω sq-1, an optical transmittance of 82.1% and a work function of 4.57 eV. By using these materials as the source and drain electrodes, fully solution-processed In2O3 thin film transistors (TFTs) were fabricated, and they showed excellent device performance. Furthermore, the fully solution-processed flexible In2O3 TFTs with these SWCNT-AZO NP hybrid electrodes exhibited only a 2.02% decrease in the field effect mobility after 1000 cycles of repeated bending stress at a radius of curvature of 3 mm.

UR - http://www.scopus.com/inward/record.url?scp=84938369985&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84938369985&partnerID=8YFLogxK

U2 - 10.1039/c5tc01481f

DO - 10.1039/c5tc01481f

M3 - Article

AN - SCOPUS:84938369985

VL - 3

SP - 8121

EP - 8126

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

SN - 2050-7526

IS - 31

ER -