0

Dispersive Electron Transport in tris(8-hydroxyquinoline) Aluminum (Alq3) Probed by Impedance Spectroscopy

Stefan Berleb, Wolfgang Brütting

Phys Rev Lett. 2002 Dec 31;89(28 Pt 1):286601.

PMID: 12513168

Abstract:

Electron transport in tris(8-hydroxyquinoline) aluminum (Alq3) is investigated by impedance spectroscopy under conditions of space-charge limited conduction (SCLC). Existing SCLC models are extended to include the field dependence of the charge carrier mobility and energetically distributed trap states. The dispersive nature of electron transport is revealed by a frequency-dependent mobility with a dispersion parameter alpha in the range 0.4-0.5, independent of temperature. This indicates that positional rather than energetic disorder is the dominant mechanism for the dispersive transport of electrons in Alq3.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP2085338 Tris-(8-hydroxyquinoline)aluminum Tris-(8-hydroxyquinoline)aluminum 2085-33-8 Price
qrcode