The absorption and light-emitting properties of a blue aluminum complex are investigated theoretically. The complex is bis(8-hydroxyquinolinolato) aluminum hydroxide [Al(Mq)2OH] and emits at about 485 nm. Very bright organic light-emitting diodes can be fabricated from Al(Mq) 2OH with a maximum luminance of about 14000 cd/m2. The geometry, bonding, and frontier orbitals are examined in details by self-consistent Hartree-Fock method and by density functional theory. Computational results indicate that the peak emission is mainly determined by the 2-methyl-8-quinolinol group and is independent of the hydroxide group. The computed absorption and emission gaps are in good agreement with experimentally determined values.
|Number of pages||5|
|Journal||Physics Letters, Section A: General, Atomic and Solid State Physics|
|Publication status||Published - 2 Feb 2004|
Scopus Subject Areas
- Physics and Astronomy(all)
- Ab initio calculations
- Bis(8-hydroxyquinolinolato) aluminum hydroxide [Al(Mq)OH]