Organic Field Effect Transistors (OFETs) Fabricated from Phenothiazine-TCNQ

ORAL

Abstract

Charge transfer cocrystals have interesting applications in the field of organic electronics due to their

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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Publication: Submitted Manuscript:
Charge transport through super-exchange in phenothiazine-7,7,8,8-tetracyanoquinodimethane (PTZ-TCNQ) co-crystal microribbon FETs grown using evaporative alignment
Scott Melis, Samantha Hung, Chaitali Bagade, Yuri Chung, Eleni Hughes, Xinran Zhang, Paola Barbara, Peize Han, Tingting Li, Daniel McCusker, Robert Hartsmith, Jeffery Bertke, Pratibha Dev, Iris Stone, Jaydeep Joshi, Patrick Vora, Edward Van Keuren

Presenters

  • Yuri Chung

    • Georgetown University

Authors

  • Yuri Chung

    • Georgetown University