Different contact formations at the interfaces of C 60/LiF/Al and C 60/LiF/Ag

Pyungeun Jeon; Seong Jun Kang; Hyunbok Lee; Jeihyun Lee; Kwangho Jeong; Jinwoo Lee; Yeonjin Yi

doi:10.1063/1.3700249

Different contact formations at the interfaces of C ₆₀/LiF/Al and C ₆₀/LiF/Ag

Pyungeun Jeon, Seong Jun Kang, Hyunbok Lee, Jeihyun Lee, Kwangho Jeong, Jinwoo Lee, Yeonjin Yi

Department of Physics

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

5 Citations (Scopus)

Abstract

C ₆₀ has been used as an electron accepting and transporting material in various organic electronic devices. In such devices, Al and Ag have been adopted as a common cathode in combination with electron injection layers (EIL), e.g., LiF. We found that the initial interface formations of C ₆₀/LiF/Al and C ₆₀/LiF/Ag are quite different in terms of interfacial electronic structures. We measured the interfacial electronic structures with photoemission spectroscopy and found that LiF works well as an EIL on Al but performs poorly on Ag. The origin of this difference could be attributed to the larger interface dipole on Al, highlighting the importance of the choice of cathode materials.

Original language	English
Article number	073711
Journal	Journal of Applied Physics
Volume	111
Issue number	7
DOIs	https://doi.org/10.1063/1.3700249
Publication status	Published - 2012 Apr 1

Bibliographical note

Funding Information:
This work was supported by the BK21 project of the ministry of Education, Science and Technology, a research project of KRF (Grant No. 2011-0004748) and in part by the Yonsei University Research Fund of 2011.

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/1.3700249

Cite this

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title = "Different contact formations at the interfaces of C 60/LiF/Al and C 60/LiF/Ag",

abstract = "C 60 has been used as an electron accepting and transporting material in various organic electronic devices. In such devices, Al and Ag have been adopted as a common cathode in combination with electron injection layers (EIL), e.g., LiF. We found that the initial interface formations of C 60/LiF/Al and C 60/LiF/Ag are quite different in terms of interfacial electronic structures. We measured the interfacial electronic structures with photoemission spectroscopy and found that LiF works well as an EIL on Al but performs poorly on Ag. The origin of this difference could be attributed to the larger interface dipole on Al, highlighting the importance of the choice of cathode materials.",

author = "Pyungeun Jeon and Kang, {Seong Jun} and Hyunbok Lee and Jeihyun Lee and Kwangho Jeong and Jinwoo Lee and Yeonjin Yi",

note = "Funding Information: This work was supported by the BK21 project of the ministry of Education, Science and Technology, a research project of KRF (Grant No. 2011-0004748) and in part by the Yonsei University Research Fund of 2011.",

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T1 - Different contact formations at the interfaces of C 60/LiF/Al and C 60/LiF/Ag

AU - Jeon, Pyungeun

AU - Kang, Seong Jun

AU - Lee, Hyunbok

AU - Lee, Jeihyun

AU - Jeong, Kwangho

AU - Lee, Jinwoo

AU - Yi, Yeonjin

N1 - Funding Information: This work was supported by the BK21 project of the ministry of Education, Science and Technology, a research project of KRF (Grant No. 2011-0004748) and in part by the Yonsei University Research Fund of 2011.

PY - 2012/4/1

Y1 - 2012/4/1

N2 - C 60 has been used as an electron accepting and transporting material in various organic electronic devices. In such devices, Al and Ag have been adopted as a common cathode in combination with electron injection layers (EIL), e.g., LiF. We found that the initial interface formations of C 60/LiF/Al and C 60/LiF/Ag are quite different in terms of interfacial electronic structures. We measured the interfacial electronic structures with photoemission spectroscopy and found that LiF works well as an EIL on Al but performs poorly on Ag. The origin of this difference could be attributed to the larger interface dipole on Al, highlighting the importance of the choice of cathode materials.

AB - C 60 has been used as an electron accepting and transporting material in various organic electronic devices. In such devices, Al and Ag have been adopted as a common cathode in combination with electron injection layers (EIL), e.g., LiF. We found that the initial interface formations of C 60/LiF/Al and C 60/LiF/Ag are quite different in terms of interfacial electronic structures. We measured the interfacial electronic structures with photoemission spectroscopy and found that LiF works well as an EIL on Al but performs poorly on Ag. The origin of this difference could be attributed to the larger interface dipole on Al, highlighting the importance of the choice of cathode materials.

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