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Substituted polyfluorene-based hole transport layer with tunable solubility

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Author: Craciun, N.I. · Wildeman, J. · Blom, P.W.M.
Type:article
Date:2010
Institution: TNO Industrie en Techniek
Source:Journal of Physical Chemistry C, 23, 114, 10559-10564
Identifier: 364421
Keywords: Materials · Charge transport properties · Chemical structure · Double layers · Electrical characterization · Hole transport layers · Light emitting layers · Poly-p-phenylenevinylene · Polyfluorenes · Polymer light-emitting diodes · Room temperature · Triarylamines · Hole mobility · Light emission · Light emitting diodes · Solubility · Toluene · Transport properties · Organic polymers · High Tech Systems & Materials · Industrial Innovation · Mechatronics, Mechanics & Materials · HOL - Holst · TS - Technical Sciences

Abstract

We report on the synthesis and electrical characterization of polyfluorene-triarylamine-based hole transport layers (HTLs). The solubility of the HTL can be tuned by adjustment of the chemical structure without loss of the charge transport properties. Double-layer polymer light-emitting diodes are constructed with an HTL that is not soluble in toluene at room temperature, combined with a poly(p-phenylene vinylene) (PPV)-derivative-based light-emitting layer. The addition of the HTL enhances the efficiency of the PLED with 10% at higher voltages. © 2010 American Chemical Society.