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Title: Photogeneration and enhanced charge transport in aligned smectic liquid crystalline organic semiconductor

Liquid crystalline organic semiconductors are emerging candidates for applications in electronic and photonic devices. One of the most attractive aspects of such materials is the potential, in principle, to easily control and manipulate the molecular alignment of the semiconductor over large length scales. Here, we explore the consequences of alignment in a model smectic liquid crystalline semiconductor, and find that the photogeneration efficiency is a strong function of incident polarization in aligned samples. A straightforward theory shows that such behavior is a general feature of aligned materials, regardless of the details of photophysics. Furthermore, we uncover tentative evidence that the mobility of aligned samples is substantially enhanced. Both of these phenomena are of significant technological importance.
Authors:
;  [1] ; ;  [2]
  1. Department of Physics, Kent State University, Kent, Ohio 44242 (United States)
  2. Department of Chemistry, Kent State University, Kent, Ohio 44242 (United States)
Publication Date:
OSTI Identifier:
22492790
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCIDENTS; ALIGNMENT; CHARGE TRANSPORT; EFFICIENCY; ORGANIC SEMICONDUCTORS; POLARIZATION; POTENTIALS