Generic packing motifs in vapor-deposited glasses of organic semiconductors
File(s)
Date
2019-08-23Author
Bagchi, Kushal
Gujral, Ankit
Toney, Michael
Ediger, Mark
Publisher
Royal society of chemistry
Metadata
Show full item recordAbstract
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 ∼0.8Tg (where Tg 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.
Subject
Organic semiconductor, GIWAXS, OLED,
Permanent Link
http://digital.library.wisc.edu/1793/79988Citation
Bagchi, K., Gujral, A., Toney, M. F., & Ediger, M. D. (2019). Generic packing motifs in vapor-deposited glasses of organic semiconductors. Soft matter, 15(38), 7590-7595.