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Title: Molecular organization in MAPLE-deposited conjugated polymer thin films and the implications for carrier transport characteristics

Journal Article · · Journal of Polymer Science. Part B, Polymer Physics
DOI:https://doi.org/10.1002/polb.24237· OSTI ID:1339946
 [1];  [1];  [2];  [3];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
  2. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
  3. Univ. of Houston, TX (United States). Dept. of Chemical and Biomolecular Engineering

The morphological structure of poly(3-hexylthiophene) (P3HT) thin films deposited by both Matrix Assisted Pulsed Laser Evaporation (MAPLE) and solution spin-casting methods are investigated. We found that the MAPLE samples possessed a higher degree of disorder, with random orientations of polymer crystallites along the side-chain stacking, π-π stacking, and conjugated backbone directions. Furthermore, the average molecular orientations and relative degrees of crystallinity of MAPLE-deposited polymer films are insensitive to the chemistries of the substrates onto which they were deposited; this is in stark contrast to the films prepared by the conventional spin-casting technique. In spite of the seemingly unfavorable molecular orientations and the highly disordered morphologies, the in-plane charge carrier transport characteristics of the MAPLE samples are comparable to those of spin-cast samples, exhibiting similar transport activation energies (56 meV versus 54 meV) to those reported in the literature for high mobility polymers.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Vietnam Education Foundation
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1339946
Journal Information:
Journal of Polymer Science. Part B, Polymer Physics, Vol. 55, Issue 1; ISSN 0887-6266
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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Cited By (2)

Molecular weight dependent structure and charge transport in MAPLE-deposited poly(3-hexylthiophene) thin films journal February 2018
Organic/hybrid thin films deposited by matrix-assisted pulsed laser evaporation (MAPLE) journal December 2017

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