Organic thin film transistors
AssigneeWake Forest University
InventorsOana Diana Jurchescu, Peter James Diemer
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Abstract
In one aspect, organic thin film transistors are described herein. In some embodiments, an organic thin film transistor comprises a source terminal, a drain terminal and a gate terminal; a dielectric layer positioned between the gate terminal and the source and drain terminals; and a vibrationally-assisted drop-cast organic film comprising small molecule semiconductor in electrical communication with the source terminal and drain terminal, wherein the transistor has a carrier mobility (μeff) of at least about 1 cm2/V·s.
Claims19
An organic thin film transistor comprising:
- a source terminal, a drain terminal and a gate terminal;
- a dielectric layer positioned between the gate terminal and the source and drain terminals;
- and
- an organic film comprising small molecule semiconductor in electrical communication with the source terminal and drain terminal,
- wherein the organic thin film transistor has an interfacial trap density of less than 1E12 cm−2−eV−1 and a work function alteration layer is positioned between at least one of the source terminal or drain terminal and the organic film.
An organic thin film transistor comprising:
- a source terminal, a drain terminal and a gate terminal;
- a dielectric layer positioned between the gate terminal and the source and drain terminals;
- and
- an organic film comprising small molecule semiconductor in electrical communication with the source terminal and drain terminal,
- wherein the organic thin film transistor has an interfacial trap density of less than 1E12 cm−2−eV−1 and the small molecule semiconductor comprises a structure of Formula (I):
- wherein Z is selected from the group consisting of Si and Ge,
- R1-R6 are independently selected from the group consisting of C1-20 alkyl and C1-20 alkenyl, and
- R7 is selected from a group consisting of F, H, —CN.
An organic thin film transistor comprising:
- a source terminal, a drain terminal and a gate terminal;
- a dielectric layer positioned between the gate terminal and the source and drain terminals;
- and
- an organic film comprising small molecule semiconductor in electrical communication with the source terminal and drain terminal,
- wherein the organic thin film transistor has an interfacial trap density of less than 1E12 cm−2−eV−1 and the small molecule semiconductor comprises a structure of Formula (II):
- wherein Z is selected from the group consisting of Si and Ge,
- R7-R12 are independently selected from the group consisting of C1-20 alkyl and C1-20 alkenyl, and
- R13-R20 are independently selected from the group consisting of hydrogen, halogen, cyano, alkyl, alklenyl, alkynyl, aryl and heteroaryl.
An organic thin film transistor comprising:
- a source terminal, a drain terminal and a gate terminal;
- a dielectric layer positioned between the gate terminal and the source and drain terminals;
- and
- an organic film comprising small molecule semiconductor in electrical communication with the source terminal and drain terminal,
- wherein the organic thin film transistor has an interfacial trap density of less than 1E12 cm−2−eV−1 and the small molecule semiconductor comprises a structure of Formula (III):
- wherein Z is selected from the group consisting of Si and Ge, and
- R21-R26 are independently selected from the group consisting of C1-20 alkyl and C1-20 alkenyl.
An organic thin film transistor comprising:
- a source terminal, a drain terminal and a gate terminal;
- a dielectric layer positioned between the gate terminal and the source and drain terminals;
- and
- an organic film comprising small molecule semiconductor in electrical communication with the source terminal and drain terminal,
- wherein the organic thin film transistor has an interfacial trap density of less than 1E12 cm−2−eV−1 and the small molecule semiconductor comprises a structure of Formula (IV):
- wherein Z is selected from the group consisting of Si and Ge, and
- R27-R32 are independently selected from the group consisting of C1-20 alkyl and C1-20 alkenyl.
Dependencies are inferred from the claim text.