Item Details

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.

subject

contributor

Smith, Gregory McRae (author)

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)

10000-01-01 (liftdate)

embargo

forever (terms)

identifier

http://hdl.handle.net/10339/57265 (uri)

language

en (iso)

publisher

Wake Forest University

title

Field Induced Polymer Electroluminescence

type

Dissertation