Energy level diagrams of optimized ambipolar organic thin film transistors used pentacene and C60

S. J. Kang; Y. Yi; C. Y. Kim; M. Noh; K. Jeong; K. H. Yoo; C. N. Whang

doi:10.1117/12.616493

Energy level diagrams of optimized ambipolar organic thin film transistors used pentacene and C₆₀

S. J. Kang, Y. Yi, C. Y. Kim, M. Noh, K. Jeong, K. H. Yoo, C. N. Whang

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

The interface electronic structure of pentacene and C₆₀ layer was investigated in detail by using ultraviolet photoelectron spectroscopy and x-ray photoelectron spectroscopy. The magnitudes of measured interface dipole were 0.11 eV and 0.07 eV for the C₆₀ deposited on pentacene (C ₆₀/pentacene) and the pentacene deposited on C₆₀ (pentacene/C₆₀), respectively. The obtained C 1s spectra on pentacene/C₆₀ and C₆₀/pentacene indicate no significant chemical bonds existing at the interface. The offsets of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) at the C₆₀-pentacene interface were 1.29 eV and 0.89 eV for C ₆₀/pentacene/Au while it were 1.5 eV and 1.1 eV for pentacene/C ₆₀/Au. This resulted in that the HOMO and LUMO offset depend on the deposition order of the organic layers. We fabricated the ambipolar OTFTs used the favorable structure of pentacene and C60, and obtained the field effect mobilities were 0.017 cm²/Vs and 0.007 cm²/Vs for p-channel and n-channel operations.

Original language	English
Article number	594019
Pages (from-to)	1-10
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5940
DOIs	https://doi.org/10.1117/12.616493
Publication status	Published - 2005
Event	Organic Field-Effect Transistors IV - San Diego, CA, United States Duration: 2005 Jul 31 → 2005 Aug 2

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.616493

Cite this

@article{b4232a54bcca4bc392f3c45be4441303,

title = "Energy level diagrams of optimized ambipolar organic thin film transistors used pentacene and C60",

abstract = "The interface electronic structure of pentacene and C60 layer was investigated in detail by using ultraviolet photoelectron spectroscopy and x-ray photoelectron spectroscopy. The magnitudes of measured interface dipole were 0.11 eV and 0.07 eV for the C60 deposited on pentacene (C 60/pentacene) and the pentacene deposited on C60 (pentacene/C60), respectively. The obtained C 1s spectra on pentacene/C60 and C60/pentacene indicate no significant chemical bonds existing at the interface. The offsets of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) at the C60-pentacene interface were 1.29 eV and 0.89 eV for C 60/pentacene/Au while it were 1.5 eV and 1.1 eV for pentacene/C 60/Au. This resulted in that the HOMO and LUMO offset depend on the deposition order of the organic layers. We fabricated the ambipolar OTFTs used the favorable structure of pentacene and C60, and obtained the field effect mobilities were 0.017 cm2/Vs and 0.007 cm2/Vs for p-channel and n-channel operations.",

author = "Kang, {S. J.} and Y. Yi and Kim, {C. Y.} and M. Noh and K. Jeong and Yoo, {K. H.} and Whang, {C. N.}",

year = "2005",

doi = "10.1117/12.616493",

language = "English",

volume = "5940",

pages = "1--10",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Organic Field-Effect Transistors IV ; Conference date: 31-07-2005 Through 02-08-2005",

}

TY - JOUR

T1 - Energy level diagrams of optimized ambipolar organic thin film transistors used pentacene and C60

AU - Kang, S. J.

AU - Yi, Y.

AU - Kim, C. Y.

AU - Noh, M.

AU - Jeong, K.

AU - Yoo, K. H.

AU - Whang, C. N.

PY - 2005

Y1 - 2005

N2 - The interface electronic structure of pentacene and C60 layer was investigated in detail by using ultraviolet photoelectron spectroscopy and x-ray photoelectron spectroscopy. The magnitudes of measured interface dipole were 0.11 eV and 0.07 eV for the C60 deposited on pentacene (C 60/pentacene) and the pentacene deposited on C60 (pentacene/C60), respectively. The obtained C 1s spectra on pentacene/C60 and C60/pentacene indicate no significant chemical bonds existing at the interface. The offsets of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) at the C60-pentacene interface were 1.29 eV and 0.89 eV for C 60/pentacene/Au while it were 1.5 eV and 1.1 eV for pentacene/C 60/Au. This resulted in that the HOMO and LUMO offset depend on the deposition order of the organic layers. We fabricated the ambipolar OTFTs used the favorable structure of pentacene and C60, and obtained the field effect mobilities were 0.017 cm2/Vs and 0.007 cm2/Vs for p-channel and n-channel operations.

AB - The interface electronic structure of pentacene and C60 layer was investigated in detail by using ultraviolet photoelectron spectroscopy and x-ray photoelectron spectroscopy. The magnitudes of measured interface dipole were 0.11 eV and 0.07 eV for the C60 deposited on pentacene (C 60/pentacene) and the pentacene deposited on C60 (pentacene/C60), respectively. The obtained C 1s spectra on pentacene/C60 and C60/pentacene indicate no significant chemical bonds existing at the interface. The offsets of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) at the C60-pentacene interface were 1.29 eV and 0.89 eV for C 60/pentacene/Au while it were 1.5 eV and 1.1 eV for pentacene/C 60/Au. This resulted in that the HOMO and LUMO offset depend on the deposition order of the organic layers. We fabricated the ambipolar OTFTs used the favorable structure of pentacene and C60, and obtained the field effect mobilities were 0.017 cm2/Vs and 0.007 cm2/Vs for p-channel and n-channel operations.

UR - http://www.scopus.com/inward/record.url?scp=31744435482&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=31744435482&partnerID=8YFLogxK

U2 - 10.1117/12.616493

DO - 10.1117/12.616493

M3 - Conference article

AN - SCOPUS:31744435482

SN - 0277-786X

VL - 5940

SP - 1

EP - 10

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 594019

T2 - Organic Field-Effect Transistors IV

Y2 - 31 July 2005 through 2 August 2005

ER -

Energy level diagrams of optimized ambipolar organic thin film transistors used pentacene and C₆₀

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this