Electronic structure of tris(8-hydroxyquinoline) aluminum thin films in the pristine and reduced states
- 1 August 1999
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 111 (5) , 2157-2163
- https://doi.org/10.1063/1.479486
Abstract
The electronic structure of tris(8-hydroxyquinoline) aluminum (Alq(3)) has been studied in the pristine molecular solid state as well as upon interaction (doping) with potassium and lithium. We discuss the results of a joint theoretical and experimental investigation, based on a combination of x-ray and ultraviolet photoelectron spectroscopies with quantum-chemical calculations at the density functional theory level. Upon doping, each electron transferred from an alkali metal atom is stored on one of the three ligands of the Alq(3) molecule, resulting in a new spectral feature (peak) in the valence band that evolves uniformly when going from a doping level of one to three metal atoms per Alq(3) molecule. (C) 1999 American Institute of Physics. [S0021-9606(99)50628-4].Keywords
This publication has 29 references indexed in Scilit:
- Chemical vapor deposition of poly (p-phenylene vinylene) based light emitting diodes with low turn-on voltagesApplied Physics Letters, 1997
- Transparent organic light emitting devicesApplied Physics Letters, 1996
- The electronic and geometric structures of neutral and potassium-doped poly [3-(4-octylphenyl)thiophene] studied by photoelectron spectroscopySynthetic Metals, 1996
- Experimental and Theoretical Studies of the Electronic Structure of Poly(p-phenylenevinylene) and Some Ring-Substituted DerivativesMacromolecules, 1995
- Poly(p-phenylene vinylene)/tris(8-hydroxy) quinoline aluminum heterostructure light emitting diodeApplied Physics Letters, 1995
- Reliability and degradation of organic light emitting devicesApplied Physics Letters, 1994
- Evolution of Charge-Induced Gap States in Short Diphenylpolyenes as Studied by Photoelectron SpectroscopyThe Journal of Physical Chemistry, 1994
- Experimental and theoretical studies of the electronic structure of Na-doped poly (para-phenylenevinylene)Chemical Physics Letters, 1993
- Electroluminescence of doped organic thin filmsJournal of Applied Physics, 1989
- Organic electroluminescent diodesApplied Physics Letters, 1987