Exploration of Solvent Effects On Morphology of Polyaniline & Other Polymer Films Deposited Through RIR- MAPLE
Date
2017-04-05
Authors
Journal Title
Journal ISSN
Volume Title
Repository Usage Stats
views
downloads
Citation Stats
Abstract
Through the use of aromatic solvents with varying numbers of hydroxyl and methyl moieties, there is an opportunity to positively impact morphology of polymer films deposited through emulsion-based Resonant-Infrared Matrix-Assisted Pulsed Laser Evaporation (RIR-MAPLE). These more complex solvents may result in smaller emulsified particles within the target, such that smoother films are achieved. We hypothesize the amphiphilic nature of polymers, like doped Polyaniline, requires a solvent with the same solubility to form a stable emulsion target. Control over the emulsion and resulting film properties can yield beneficial device properties, like low contact resistance. Our hypothesis is also tested against hydrophobic polymers, like P3HT, which have been deposited successfully using RIR-MAPLE with chlorobenzenes as the solvent family. We propose that the addition of hydroxyl moieties to the aromatic ring of the solvent should also yield more control over the film morphology. Atomic force microscopy, UV-Vis absorbance, and dark current density-voltage measurements of the resulting films will be reported, as well as a discussion of how these results relate to previously understood paradigms in RIR-MAPLE deposition.
Type
Department
Description
Provenance
Subjects
Citation
Permalink
Published Version (Please cite this version)
Collections
Scholars@Duke
Adrienne Stiff-Roberts
Dr. Stiff-Roberts received both the B.S. degree in physics from Spelman College and the B.E.E. degree in electrical engineering from the Georgia Institute of Technology in 1999. She received an M.S.E. in electrical engineering and a Ph.D. in applied physics in 2001 and 2004, respectively, from the University of Michigan, Ann Arbor, where she investigated high-temperature quantum dot infrared photodetectors grown by molecular beam epitaxy. Dr. Stiff-Roberts joined Duke University in August 2004, and she is a Professor of Electrical and Computer Engineering.
Dr. Stiff-Roberts' research interests include the synthesis of multi-component and hybrid (organic-inorganic) materials using a novel approach for organic-based thin film deposition that combines solution and vacuum-processing. Known as emulsion-based, resonant infrared matrix-assisted pulsed laser evaporation (RIR-MAPLE), this technique offers a completely new way to integrate novel functions into organic-based films and devices that are difficult, if not impossible, to achieve otherwise. Research efforts include materials synthesis and characterization to investigate the fundamental mechanisms of thin-film growth using RIR-MAPLE, as well as device fabrication and characterization for a broad range of applications (especially optoelectronic and energy devices).
Material is made available in this collection at the direction of authors according to their understanding of their rights in that material. You may download and use these materials in any manner not prohibited by copyright or other applicable law.