Applied Physics Letters · 1998 · 218 citations · 7 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemistryElectronic MaterialsSpectroscopyInterface EngineeringOptoelectronic MaterialsOrganic Electronic MaterialsOrganic SemiconductorsThin Film Electrical PropertiesAlumina Thin FilmsElectroluminescent MaterialsElectronic Structure AnalysisHighest Occupied Molecular OrbitalUltraviolet Photoelectron Spectroscopy
Electronic structures of the 8-hydroxyquinoline aluminum (Alq3)/LiF/Al and Alq3/Al interfaces were measured by ultraviolet photoelectron spectroscopy. Shifts of the highest occupied molecular orbital level and the vacuum level of the Alq3 layer due to insertion of a thin LiF layer were observed. This result indicates that the thin LiF layer at the Alq3/Al interface reduces barrier height for electron injection from the Al to Alq3. We, therefore, conclude that lowering of the driving voltage in an organic electroluminescent device with a thin LiF layer is attributable to the reduction of the barrier height.
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Organic electroluminescent diodes
Chak Wah Tang, S. A. VanSlyke · Applied Physics Letters · 1987 · 14.3K citations
Natural Sciences, Materials Engineering, Materials Science +17
Electronic band structure of the alkali halides. I. Experimental parameters
R. T. Poole, J.G. Jenkin, J. Liesegang et al. · Physical review. B, Solid state · 1975 · 340 citations
Natural Sciences, Chemistry, Physics +16