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Generic packing motifs in vapor-deposited glasses of organic semiconductors
Abstract
We study the structure of vapor-deposited glasses of five common organic semiconductors as a function of substrate temperature during deposition, using synchrotron X-ray scattering. For deposition at a substrate temperature of ~0.8$$T_g$$ (where $$T_g$$ is the glass transition temperature), we find a generic tendency towards “face-on” packing in glasses of anisotropic molecules. At higher substrate temperature however this generic behavior breaks down; glasses of rod-shaped molecules exhibit a more pronounced tendency for end-on packing. Our study provides guidelines to create face-on and end-on packing motifs in organic glasses, which can promote efficient charge transport in OLED and OFET devices respectively.
- Authors:
-
[1];
[1];
[2];
[1]
- Univ. of Wisconsin, Madison, WI (United States). Dept. of Chemistry
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- OSTI Identifier:
- 1576797
- Alternate Identifier(s):
- OSTI ID: 1568933
- Grant/Contract Number:
- AC02-76SF00515; SC0002161
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Soft Matter
- Additional Journal Information:
- Journal Volume: 15; Journal Issue: 38; Journal ID: ISSN 1744-683X
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Bagchi, Kushal, Gujral, Ankit, Toney, M. F., and Ediger, M. D. Generic packing motifs in vapor-deposited glasses of organic semiconductors. United States: N. p., 2019.
Web. doi:10.1039/c9sm01155b.
Bagchi, Kushal, Gujral, Ankit, Toney, M. F., & Ediger, M. D. Generic packing motifs in vapor-deposited glasses of organic semiconductors. United States. doi:10.1039/c9sm01155b.
Bagchi, Kushal, Gujral, Ankit, Toney, M. F., and Ediger, M. D. Fri .
"Generic packing motifs in vapor-deposited glasses of organic semiconductors". United States. doi:10.1039/c9sm01155b.
@article{osti_1576797,
title = {Generic packing motifs in vapor-deposited glasses of organic semiconductors},
author = {Bagchi, Kushal and Gujral, Ankit and Toney, M. F. and Ediger, M. D.},
abstractNote = {We study the structure of vapor-deposited glasses of five common organic semiconductors as a function of substrate temperature during deposition, using synchrotron X-ray scattering. For deposition at a substrate temperature of ~0.8$T_g$ (where $T_g$ is the glass transition temperature), we find a generic tendency towards “face-on” packing in glasses of anisotropic molecules. At higher substrate temperature however this generic behavior breaks down; glasses of rod-shaped molecules exhibit a more pronounced tendency for end-on packing. Our study provides guidelines to create face-on and end-on packing motifs in organic glasses, which can promote efficient charge transport in OLED and OFET devices respectively.},
doi = {10.1039/c9sm01155b},
journal = {Soft Matter},
number = 38,
volume = 15,
place = {United States},
year = {2019},
month = {8}
}
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DOI: 10.1039/c9sm01155b
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