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Field Induced Polymer Electroluminescence

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title
Field Induced Polymer Electroluminescence
author
Smith, Gregory McRae
abstract
This work presents a new approach to electroluminescence in organics using a device employing alternating current (AC) field-induced polymer electroluminescence (FIPEL). This device consists of a transparent conductor, polymer dielectric layers, charge generation layers, a conjugated polymer-based emissive layer, and reflecting electrode. Emphasis is placed on a solution-processed fabrication approach, favoring organic polymers and small molecules. The phenomena of phosphorescence is exploited through the use of a host:guest emissive system to harvest both singlet and triplet excitons. Various polymer dielectric materials are studied to optimize the electric field on the emitting layers. Multiple organic materials are considered as charge generating layers including polymers, molecular dopants, and carbon nanotubes. White-emission is examined in these devices, leading to the discovery of a dye-concentration independence of emission. The optical and electrical characteristics are closely inspected, leading to a model for the operation of asymmetric FIPEL devices. Ultimately, this work leads to a high-performance, efficient FIPEL device that has promising implications in the fields of displays, backlighting, and general illumination.
contributor
Carroll, David L (committee chair)
Anderson, Paul R (committee member)
Jurchescu, Oana D (committee member)
Lachgar, Abdessadek (committee member)
Macosko, Jed C (committee member)
date
2015-08-25T08:35:35Z (accessioned)
2015 (issued)
degree
Physics (discipline)
embargo
forever (terms)
10000-01-01 (liftdate)
identifier
http://hdl.handle.net/10339/57265 (uri)
language
en (iso)
publisher
Wake Forest University
type
Dissertation

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