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Applied Physics A

, Volume 81, Issue 8, pp 1613-1618

The coadsorption and interaction of molecular icosahedra with mercury

  • C.C. IlieAffiliated withDepartment of Physics and Astronomy and the Center for Materials Research and Analysis, Behlen Laboratory of Physics, University of Nebraska – Lincoln
  • , S. BalazAffiliated withDepartment of Physics and Astronomy and the Center for Materials Research and Analysis, Behlen Laboratory of Physics, University of Nebraska – Lincoln
  • , L.G. RosaAffiliated withDepartment of Physics and Astronomy and the Center for Materials Research and Analysis, Behlen Laboratory of Physics, University of Nebraska – Lincoln
  • , J. ZhangAffiliated withDepartment of Physics, Florida International UniversityCenter for Materials Research and Analysis, 116 Brace Laboratory, University of Nebraska – Lincoln
  • , P. Lunca-PopaAffiliated withDepartment of Physics and Astronomy and the Center for Materials Research and Analysis, Behlen Laboratory of Physics, University of Nebraska – LincolnCollege of Engineering and Technology, N104 Walter Scott Engineering Center, 17th and Vine Streets, University of Nebraska – Lincoln
  • , C. BianchettiAffiliated withJ. Bennett Johnston Sr. Center for Advanced Microstructures and Devices, Louisiana State University
  • , R. TittsworthAffiliated withJ. Bennett Johnston Sr. Center for Advanced Microstructures and Devices, Louisiana State University
  • , J.I. BrandAffiliated withCollege of Engineering and Technology, N104 Walter Scott Engineering Center, 17th and Vine Streets, University of Nebraska – Lincoln
  • , B. DoudinAffiliated withDepartment of Physics and Astronomy and the Center for Materials Research and Analysis, Behlen Laboratory of Physics, University of Nebraska – Lincoln
    • , P.A. DowbenAffiliated withDepartment of Physics and Astronomy and the Center for Materials Research and Analysis, Behlen Laboratory of Physics, University of Nebraska – Lincoln Email author 

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Abstract

We have investigated the changes in the electronic structure of molecularly adsorbed orthocarborane films, as a function of Hg co-adsorption, using photoemission. The interaction between Hg and molecular orthocarborane is weak and results in the formation of some small aggregates of Hg. This behavior is very different from alkali metals interaction with molecular carborane films and the interaction of Hg with semiconducting boron carbide films. Hg doping of semiconducting boron carbide may decrease the activation barrier for intrinsic carrier mobility, but does not significantly increase the number of carriers.