Browsing by Subject "Light emitting diodes"

Now showing items 1-5 of 5

    • Article  

      Efficient electrical spin injection from a magnetic metal/tunnel barrier contact into a semiconductor 

      Hanbicki, A. T.; Jonker, B. T.; Itskos, Grigorios; Kioseoglou, G.; Petrou, Athos Chariton (2002)
      We report electrical spin injection from a ferromagnetic metal contact into a semiconductor light emitting diode structure with an injection efficiency of 30% which persists to room temperature. The Schottky barrier formed ...
    • Conference Object  

      Electrical spin injection and band offsets in an n-type ferromagnetic semiconductor heterostructure: n-CdCr2Se4/AlGaAs/GaAs 

      Jonker, B. T.; Hanbicki, A. T.; Kioseoglou, G.; Li, C. H.; Stroud, R. M.; Sullivan, J. M.; Erwin, S. C.; Lüpke, G.; Zhao, H. B.; Ren, Y. H.; Sun, B.; Itskos, Grigorios; Mallory, R.; Yasar, M.; Petrou, Athos Chariton (Institute of Electrical and Electronics Engineers Inc., 2003)
      Electrical spin injection and band offsets in an n-type ferromagnetic semiconductor heterostructure of CdCr2Se4-AlGaAs-GaAs are studied. Epitaxially grown CdCr2Se4 films exhibit hysteresis behavior with significant remanence, ...
    • Article  

      Electroluminescence by a Sm3+-diketonate-phenanthroline complex 

      Stathatos, Elias; Lianos, P.; Evgeniou, E.; Keramidas, Anastasios D. (2003)
      The development of an organic light emitting diode (OLED) based on the use of Sm3+ complex as an emitting layer was investigated. The construction process also involved the use of poly(vinylcarbazole) (PVK) as the transporter ...
    • Article  

      Electroluminescence from a volatile europium complex 

      Stathatos, Elias; Panayiotidou, L.; Lianos, P.; Keramidas, Anastasios D. (2006)
      Three new strongly chelating heterocyclic ligands containing pyridine, imidazole and triazine rings have been used to make ternary complexes of Europium(III) ions together with trifluoroacetylacetonate. The complex containing ...
    • Article  

      Reduction of spin injection efficiency by interface defect spin scattering in ZnMnSe/AlGaAs-GaAs spin-polarized light-emitting diodes 

      Stroud, R. M.; Hanbicki, A. T.; Park, Y. D.; Kioseoglou, G.; Petukhov, A. G.; Jonker, B. T.; Itskos, Grigorios; Petrou, Athos Chariton (2002)
      The effects of the interface microstructure on spin-injection efficiency in Zn1-xMnxSe/AlyGa1-yAs-GaAs spin-polarized light-emitting diodes (spin-LEDs) were studied. It was shown that the quantum well (QW) spin polarization ...