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Electrical and Computer Engineering
Virginia Commonwealth University
LIGHT-EMITTING DEVICES; QUANTUM-WELL STRUCTURES; THIN-FILMS; ALQ(3); MORPHOLOGY; PHASE; DEPOSITION; EFFICIENCY; DIODES
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Full-Text Articles in Engineering
Correlated Growth Of Organic Material Tris (8-Hydroxyquinoline) Aluminum (Alq3) And Its Relation To Optical Properties, Bhargava R. Kanchibotla, K. Garre, Deeder Aurongzeb
Correlated Growth Of Organic Material Tris (8-Hydroxyquinoline) Aluminum (Alq3) And Its Relation To Optical Properties, Bhargava R. Kanchibotla, K. Garre, Deeder Aurongzeb
Electrical and Computer Engineering Publications
We report slow correlated growth mode in energetic cluster vapor deposited organic light emissive material tris(8-hydroxyquinoline) aluminum from 5 to 100 nm. Phase modulated atomic force microscopy shows very slow grain growth with thickness, with very small phase differences within the film.Fractal dimension calculated from correlation function shows growth process above 10 nm consistent with diffusion-limited aggregation. For low thickness (5 nm), photoluminescence measurement shows the emission peak is shifted by ∼0.4 eV toward lower wavelength.