Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N33: Microscopic Self-Assembly II
11:30 AM–1:54 PM,
Wednesday, March 8, 2023
Room: Room 225
Sponsoring
Unit:
DSOFT
Chair: Tine Curk, Johns Hopkins University
Abstract: N33.00010 : Organic Field Effect Transistors (OFETs) Fabricated from Phenothiazine-TCNQ*
1:18 PM–1:30 PM
Presenter:
Yuri Chung
(Georgetown University)
Author:
Yuri Chung
(Georgetown University)
Collaborations:
Georgetown University Department of Physics, Georgetown University Institute of Soft Matter Synthesis and Metrology
unique optical and electronic properties. Controlled evaporative self-assembly (CESA) is a technique that
produces long, ordered ribbons of material on a substrate from an evaporating solvent. Charge transfer
cocrystals were successfully grown using this method to form a neat arrangement of ribbons that were
readily integrated with metal electrodes to create organic field-effect transistors for electronic
measurements. Temperature dependent measurements of the mobility in devices with phenothiazine
and 7,7’,8,8’ tetracyanoquinodimethane (PTZ-TCNQ) as the semiconductor indicated a hopping
mechanism for the charge transport, which was predominantly n-type conduction. These data could be
explained well using a super-exchange model.
*The authors gratefully acknowledge support from the National Science Foundation MRI Program for acquisition of the Raman instrument used in these studies (NSF CHE-1429079) and the NASA DC Space Grant for support of Yuri Chung. Scott Melis would like to thank the Walter G. Mayer Endowed Scholarship Fund for support.
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