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Baik, Jeong Min
Nano Energy and Environmental Materials Lab
Research Interests
  • Nanogenerators, antimicrobial material, catalysis, smart sensors

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Determination of interface dipole energy at the interface of ruthenium-oxide-coated anode with organic material using synchrotron radiation photoemission spectroscopy

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Title
Determination of interface dipole energy at the interface of ruthenium-oxide-coated anode with organic material using synchrotron radiation photoemission spectroscopy
Author
Kim, SYBaik, Jeong MinLee, JL
Keywords
LIGHT-EMITTING-DIODES; LEVEL ALIGNMENT; METAL
Issue Date
2005
Publisher
ELECTROCHEMICAL SOC INC
Citation
ELECTROCHEMICAL AND SOLID STATE LETTERS, v.8, no.9, pp.H79 - H81
Abstract
4,4'-Bis[N-1-naphthyl)-N-phenylamino]biphenyl (alpha-NPD) was deposited in situ on both ruthenium oxide-coated indium-tin oxide (RuOx-ITO) and O-2-plasma-treated ITO (O-2-ITO) anodes, and their interface dipole energies were quantitatively determined using synchrotron radiation photoemission spectroscopy. The dipole energy of RuOx-ITO was lower by 0.2 eV than that of O-2-ITO even though RuOx-ITO had a higher work function. Secondary electron emission spectra after deposition of alpha-NPD on anodes revealed that the work function of RuOx-ITO is higher by 0.2 eV than that of O-2-ITO, resulting in a decrease of the turn-on voltage via reduction of hole injection barrier.
URI
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DOI
10.1149/1.1996510
ISSN
1099-0062
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MSE_Journal Papers
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