Influences of oligomer length on carrier-transport properties of oligofluorenes
Journal
Applied Physics Letters
Journal Volume
85
Journal Issue
7
Pages
1172-1174
Date Issued
2004-01
Author(s)
Abstract
The examination of carrier-transport properties of a homologous series of oligofluorenes with C9 diaryl substitution was presented. The charge transport in oligofluorene films was characterized by the time-of-flight (TOF) transient photocurrent technique. The structures of oligofluorenes were also investigated. It was shown that these substituted oligofluorenes posses stable amorphous states ambipolar carrier-transport properties and processability to thin films for a range of oligomer lengths, rendering feasible investigating dependence of carrier transport on oligomer length in disordered systems. The carrier mobilities of these oligofluorenes show a clear decreasing trend with oligomer length.
SDGs
Other Subjects
Chain defects; Disordered systems; Photonics; Amorphous materials; Charge transfer; Glass transition; Morphology; Optoelectronic devices; Photocurrents; Photons; Plastic films; Substitution reactions; Thin films; Oligomers
Type
journal article