Quantification of the solid-state charge mobility in a model radical polymer
Abstract
We establish that an oft-used radical polymer, poly(2,2,6,6-tetramethylpiperidinyloxy methacrylate) (PTMA), has a solid-state hole mobility value on the order of 10-4cm2V-1s-1 in a space charge-limited device geometry. Despite being completely amorphous and lacking any $$π$$-conjugation, these results demonstrate that the hole mobility of PTMA is comparable to many well-studied conjugated polymers [e.g., poly(3-hexylthiophene)]. Furthermore, we show that the space charge-limited charge carrier mobility of these macromolecules is only a weak function of temperature, in contrast to many thermally-activated models of charge transport in polymeric materials. This key result demonstrates that the charge transport in radical polymers is inherently different than that in semicrystalline, conjugated polymers. These results establish the mechanism of solid-state charge transport in radical polymers and provide macromolecular design principles for this emerging class of organic electronic materials.
- Authors:
-
- Purdue Univ., West Lafayette, IN (United States)
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Re-Defining Photovoltaic Efficiency Through Molecule Scale Control (RPEMSC)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1384201
- Grant/Contract Number:
- SC0001085
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 104; Journal Issue: 21; Related Information: RPEMSC partners with Columbia University (lead); Brookhaven National Laboratory; Purdue University; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; solar (photovoltaic); electrodes - solar; charge transport; materials and chemistry by design; optics; synthesis (novel materials)
Citation Formats
Baradwaj, Aditya G., Rostro, Lizbeth, Alam, Muhammad A., and Boudouris, Bryan W. Quantification of the solid-state charge mobility in a model radical polymer. United States: N. p., 2014.
Web. doi:10.1063/1.4880118.
Baradwaj, Aditya G., Rostro, Lizbeth, Alam, Muhammad A., & Boudouris, Bryan W. Quantification of the solid-state charge mobility in a model radical polymer. United States. https://doi.org/10.1063/1.4880118
Baradwaj, Aditya G., Rostro, Lizbeth, Alam, Muhammad A., and Boudouris, Bryan W. Thu .
"Quantification of the solid-state charge mobility in a model radical polymer". United States. https://doi.org/10.1063/1.4880118. https://www.osti.gov/servlets/purl/1384201.
@article{osti_1384201,
title = {Quantification of the solid-state charge mobility in a model radical polymer},
author = {Baradwaj, Aditya G. and Rostro, Lizbeth and Alam, Muhammad A. and Boudouris, Bryan W.},
abstractNote = {We establish that an oft-used radical polymer, poly(2,2,6,6-tetramethylpiperidinyloxy methacrylate) (PTMA), has a solid-state hole mobility value on the order of 10-4cm2V-1s-1 in a space charge-limited device geometry. Despite being completely amorphous and lacking any $π$-conjugation, these results demonstrate that the hole mobility of PTMA is comparable to many well-studied conjugated polymers [e.g., poly(3-hexylthiophene)]. Furthermore, we show that the space charge-limited charge carrier mobility of these macromolecules is only a weak function of temperature, in contrast to many thermally-activated models of charge transport in polymeric materials. This key result demonstrates that the charge transport in radical polymers is inherently different than that in semicrystalline, conjugated polymers. These results establish the mechanism of solid-state charge transport in radical polymers and provide macromolecular design principles for this emerging class of organic electronic materials.},
doi = {10.1063/1.4880118},
journal = {Applied Physics Letters},
number = 21,
volume = 104,
place = {United States},
year = {Thu May 29 00:00:00 EDT 2014},
month = {Thu May 29 00:00:00 EDT 2014}
}
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Works referencing / citing this record:
A nonconjugated radical polymer glass with high electrical conductivity
journal, March 2018
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