Generic packing motifs in vapor-deposited glasses of organic semiconductors.
Soft Matter
; 15(38): 7590-7595, 2019 Oct 14.
Article
em En
| MEDLINE
| ID: mdl-31468038
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 â¼0.8Tg (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.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Soft Matter
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Estados Unidos