Anisotropic ambipolar carrier transport and high bipolar mobilities up to 0.1 cm2 V-1 s-1 in aligned liquid-crystal glass films of oligofluorene

Li Yin Chen, Tung Huei Ke, Chung Chih Wu*, Teng Chih Chao, Ken Tsung Wong, Ching Chao Chang

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

By taking advantage of the rich morphological characteristics of oligofluorenes and the mesophase-mediated molecular assembly/alignment, we studied carrier-transport properties of solid-state oligofluorenes in different morphologies and orientations. Compared to the amorphous phase, the uniaxially aligned liquid-crystal glass of oligofluorenes could give up to 100-fold enhancement in bipolar carrier-transport mobilities, bringing both hole and electron mobilities to nearly 0.1 cm2 V s. Furthermore, significant anisotropic bipolar transport, i.e., preferential bipolar carrier transport along the oligomer chain direction is observed.

Original languageEnglish
Article number163509
JournalApplied Physics Letters
Volume91
Issue number16
DOIs
StatePublished - 2007

Fingerprint Dive into the research topics of 'Anisotropic ambipolar carrier transport and high bipolar mobilities up to 0.1 cm2 V-1 s-1 in aligned liquid-crystal glass films of oligofluorene'. Together they form a unique fingerprint.

  • Cite this