Polydopamine–Copper Hybrid Films as Source and Drain for Oxide Semiconductor Field-Effect Transistors

Seok Daniel Namgung; Jaehun Lee; Taehoon Sung; Hyung Jun Kim; Ah Jin Cho; Sungjoon Koh; Junghyun An; Ik Rang Choe; Ki Tae Nam; Jang Yeon Kwon

doi:10.1002/aelm.201800046

Polydopamine–Copper Hybrid Films as Source and Drain for Oxide Semiconductor Field-Effect Transistors

Seok Daniel Namgung, Jaehun Lee, Taehoon Sung, Hyung Jun Kim, Ah Jin Cho, Sungjoon Koh, Junghyun An, Ik Rang Choe, Ki Tae Nam, Jang Yeon Kwon

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

1 Citation (Scopus)

Abstract

Oxide semiconductors are one of the key components for flexible and transparent electronics, but their use has been limited by the work function of contact materials. Carbon-based materials are strong candidates for flexible transparent electrodes, and nitrogen-doped carbon materials have been specifically investigated due to the controllability of their work function. Of the many methods to dop nitrogen, the pyrolysis of biomolecules is a particular focus since it is a simple, inexpensive process that yields a high atomic percent of nitrogen. Polydopamine (pDop), which is inspired by adhesive proteins in mussels, has been suggested for use as a precursor for pyrolysis, and the pyrolyzed pDop–Cu hybrid film shows the lowest resistivity (1.4 × 10⁻⁴ Ω cm) in pyrolyzed carbon so far, for which copper chelation is attributed to reduction in resistivity. The pyrolyzed film also shows a transparency of 84%, and it is stable in cyclic bending tests up to 10⁵ cycles. The films are further applied to the source and drain of a field-effect transistor, and the devices achieve a high performance that is comparable to that from molybdenum contacted device, with the work function ranging from 4.51 to 4.31 eV.

Original language	English
Article number	1800046
Journal	Advanced Electronic Materials
Volume	4
Issue number	8
DOIs	https://doi.org/10.1002/aelm.201800046
Publication status	Published - 2018 Aug

Bibliographical note

Funding Information:
Pyrolysis gives rise to a structural change in the pDop– Cu film, which is supported by Figure 1b showing X-ray photoelectron spectroscopy (XPS) nitrogen 1s spectra. The only NH peak (399.68 eV)[36] is observed in the pristine pDop–Cu film, while pyrrolyic N (400.98 eV) and pyridinic N (398.38 eV)[37] are observed at pyrolyzed films. This means that nitrogen bonding changes into in-plane nitrogen bonding within the carbonaceous film. The atomic percent of nitrogen for the pristine and 600, 700 , and 800 °C pyrolyzed films are 6.6%, 5.5%, 4.4%, and 4.0%, respectively. Copper chelation is proved in the XPS results shown in Figure 1c. Both the pristine film and the pyrolyzed films have high copper (0) (932.58 eV) peaks and weak copper (II) (934.78 eV) peaks. Small ion satellite peaks (944.48 eV) which are proof of copper (II) are also observed.[38] The intensity of the copper (II) shoulder peak decreases after pyrolysis, and this means that copper (II) is mostly reduced to copper (0) after pyrolysis. Conclusively, pyrolyzed pDop–Cu can be understood as a copper-and nitrogen-doped graphitic carbon. This graphitization is supported by the D and G peaks in the Raman spectra (Figure S2, Supporting Information).

Funding Information:
This work was supported by Samsung Research Funding Center of Samsung Electronics under Project Number SRFC-MA1401-51.

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

Access to Document

10.1002/aelm.201800046

Cite this

@article{2d082ef5988446919d49e190245f16ee,

title = "Polydopamine–Copper Hybrid Films as Source and Drain for Oxide Semiconductor Field-Effect Transistors",

abstract = "Oxide semiconductors are one of the key components for flexible and transparent electronics, but their use has been limited by the work function of contact materials. Carbon-based materials are strong candidates for flexible transparent electrodes, and nitrogen-doped carbon materials have been specifically investigated due to the controllability of their work function. Of the many methods to dop nitrogen, the pyrolysis of biomolecules is a particular focus since it is a simple, inexpensive process that yields a high atomic percent of nitrogen. Polydopamine (pDop), which is inspired by adhesive proteins in mussels, has been suggested for use as a precursor for pyrolysis, and the pyrolyzed pDop–Cu hybrid film shows the lowest resistivity (1.4 × 10−4 Ω cm) in pyrolyzed carbon so far, for which copper chelation is attributed to reduction in resistivity. The pyrolyzed film also shows a transparency of 84%, and it is stable in cyclic bending tests up to 105 cycles. The films are further applied to the source and drain of a field-effect transistor, and the devices achieve a high performance that is comparable to that from molybdenum contacted device, with the work function ranging from 4.51 to 4.31 eV.",

author = "Namgung, {Seok Daniel} and Jaehun Lee and Taehoon Sung and Kim, {Hyung Jun} and Cho, {Ah Jin} and Sungjoon Koh and Junghyun An and Choe, {Ik Rang} and Nam, {Ki Tae} and Kwon, {Jang Yeon}",

note = "Funding Information: Pyrolysis gives rise to a structural change in the pDop– Cu film, which is supported by Figure 1b showing X-ray photoelectron spectroscopy (XPS) nitrogen 1s spectra. The only NH peak (399.68 eV)[36] is observed in the pristine pDop–Cu film, while pyrrolyic N (400.98 eV) and pyridinic N (398.38 eV)[37] are observed at pyrolyzed films. This means that nitrogen bonding changes into in-plane nitrogen bonding within the carbonaceous film. The atomic percent of nitrogen for the pristine and 600, 700 , and 800 °C pyrolyzed films are 6.6%, 5.5%, 4.4%, and 4.0%, respectively. Copper chelation is proved in the XPS results shown in Figure 1c. Both the pristine film and the pyrolyzed films have high copper (0) (932.58 eV) peaks and weak copper (II) (934.78 eV) peaks. Small ion satellite peaks (944.48 eV) which are proof of copper (II) are also observed.[38] The intensity of the copper (II) shoulder peak decreases after pyrolysis, and this means that copper (II) is mostly reduced to copper (0) after pyrolysis. Conclusively, pyrolyzed pDop–Cu can be understood as a copper-and nitrogen-doped graphitic carbon. This graphitization is supported by the D and G peaks in the Raman spectra (Figure S2, Supporting Information). Funding Information: This work was supported by Samsung Research Funding Center of Samsung Electronics under Project Number SRFC-MA1401-51. Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = aug,

doi = "10.1002/aelm.201800046",

language = "English",

volume = "4",

journal = "Advanced Electronic Materials",

issn = "2199-160X",

publisher = "Wiley-VCH Verlag",

number = "8",

}

TY - JOUR

T1 - Polydopamine–Copper Hybrid Films as Source and Drain for Oxide Semiconductor Field-Effect Transistors

AU - Namgung, Seok Daniel

AU - Lee, Jaehun

AU - Sung, Taehoon

AU - Kim, Hyung Jun

AU - Cho, Ah Jin

AU - Koh, Sungjoon

AU - An, Junghyun

AU - Choe, Ik Rang

AU - Nam, Ki Tae

AU - Kwon, Jang Yeon

N1 - Funding Information: Pyrolysis gives rise to a structural change in the pDop– Cu film, which is supported by Figure 1b showing X-ray photoelectron spectroscopy (XPS) nitrogen 1s spectra. The only NH peak (399.68 eV)[36] is observed in the pristine pDop–Cu film, while pyrrolyic N (400.98 eV) and pyridinic N (398.38 eV)[37] are observed at pyrolyzed films. This means that nitrogen bonding changes into in-plane nitrogen bonding within the carbonaceous film. The atomic percent of nitrogen for the pristine and 600, 700 , and 800 °C pyrolyzed films are 6.6%, 5.5%, 4.4%, and 4.0%, respectively. Copper chelation is proved in the XPS results shown in Figure 1c. Both the pristine film and the pyrolyzed films have high copper (0) (932.58 eV) peaks and weak copper (II) (934.78 eV) peaks. Small ion satellite peaks (944.48 eV) which are proof of copper (II) are also observed.[38] The intensity of the copper (II) shoulder peak decreases after pyrolysis, and this means that copper (II) is mostly reduced to copper (0) after pyrolysis. Conclusively, pyrolyzed pDop–Cu can be understood as a copper-and nitrogen-doped graphitic carbon. This graphitization is supported by the D and G peaks in the Raman spectra (Figure S2, Supporting Information). Funding Information: This work was supported by Samsung Research Funding Center of Samsung Electronics under Project Number SRFC-MA1401-51. Publisher Copyright: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2018/8

Y1 - 2018/8

N2 - Oxide semiconductors are one of the key components for flexible and transparent electronics, but their use has been limited by the work function of contact materials. Carbon-based materials are strong candidates for flexible transparent electrodes, and nitrogen-doped carbon materials have been specifically investigated due to the controllability of their work function. Of the many methods to dop nitrogen, the pyrolysis of biomolecules is a particular focus since it is a simple, inexpensive process that yields a high atomic percent of nitrogen. Polydopamine (pDop), which is inspired by adhesive proteins in mussels, has been suggested for use as a precursor for pyrolysis, and the pyrolyzed pDop–Cu hybrid film shows the lowest resistivity (1.4 × 10−4 Ω cm) in pyrolyzed carbon so far, for which copper chelation is attributed to reduction in resistivity. The pyrolyzed film also shows a transparency of 84%, and it is stable in cyclic bending tests up to 105 cycles. The films are further applied to the source and drain of a field-effect transistor, and the devices achieve a high performance that is comparable to that from molybdenum contacted device, with the work function ranging from 4.51 to 4.31 eV.

AB - Oxide semiconductors are one of the key components for flexible and transparent electronics, but their use has been limited by the work function of contact materials. Carbon-based materials are strong candidates for flexible transparent electrodes, and nitrogen-doped carbon materials have been specifically investigated due to the controllability of their work function. Of the many methods to dop nitrogen, the pyrolysis of biomolecules is a particular focus since it is a simple, inexpensive process that yields a high atomic percent of nitrogen. Polydopamine (pDop), which is inspired by adhesive proteins in mussels, has been suggested for use as a precursor for pyrolysis, and the pyrolyzed pDop–Cu hybrid film shows the lowest resistivity (1.4 × 10−4 Ω cm) in pyrolyzed carbon so far, for which copper chelation is attributed to reduction in resistivity. The pyrolyzed film also shows a transparency of 84%, and it is stable in cyclic bending tests up to 105 cycles. The films are further applied to the source and drain of a field-effect transistor, and the devices achieve a high performance that is comparable to that from molybdenum contacted device, with the work function ranging from 4.51 to 4.31 eV.

UR - http://www.scopus.com/inward/record.url?scp=85051203192&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85051203192&partnerID=8YFLogxK

U2 - 10.1002/aelm.201800046

DO - 10.1002/aelm.201800046

M3 - Article

AN - SCOPUS:85051203192

SN - 2199-160X

VL - 4

JO - Advanced Electronic Materials

JF - Advanced Electronic Materials

IS - 8

M1 - 1800046

ER -

Polydopamine–Copper Hybrid Films as Source and Drain for Oxide Semiconductor Field-Effect Transistors

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this