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Electronic properties of BaCuChF (Ch = S,Se,Te) surfaces and BaCuSeF/ZnPc interfaces Public Deposited

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  • BaCuChF (Ch=S,Se,Te) surfaces and BaCuSeF interfaces with zinc phthalocyanine (ZnPc) were studied by photoelectron spectroscopy. BaCuChF compounds oxidize when exposed to ambient atmosphere. Se capping layers were studied as a means to produce representative surfaces for photoelectron spectroscopic measurements. Decapped BaCuSeF surfaces remain O-free and C-free when the Se layer is evaporated but they become F-deficient. The resulting surfaces have work functions of 4.85 eV and Fermi levels located 0.25 eV above the valence band maximum. In situ stepwise deposition of ZnPc on a BaCuSeF film surface produced a chemically inert interface with a hole-injection barrier of 0.11 eV.
  • This is the publisher’s final pdf. The published article is copyrighted by the American Institute of Physics and can be found at: http://scitation.aip.org/content/aip/journal/jap.Article Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
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  • Zakutayev, A., Tate, J., Platt, H. A. S., Keszler, D. A., Hein, C., Mayer, T., … Jaegermann, W. (2010) Electronic properties of BaCuChF (Ch = S,Se,Te) surfaces and BaCuSeF/ZnPc interfaces. Journal of Applied Physics, 107(10), 103713-103713-8. doi:10.1063/1.3380594
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  • 107
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  • 10
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  • This work was supported by the Deutsche Forschungsgemeinschaft (Germany) within the framework of the collaborative research center SFB 595 and by the National Science Foundation ( USA) under Grant No. DMR-0804916.
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