# US 2019/0378993 A1 · Organic transistor

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- Number: US 2019/0378993 A1
- Document ID: US20190378993A1
- Status: Published application
- Kind: A1
- Application number: 16/486,163
- Filed: 2018-08-20
- Published: 2019-12-12
- Earliest claimed: 2017-09-18
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: BOGYU LIM; YONG-YOUNG NOH; JIYOUNG LEE; SEUNG-HOON LEE
- Web page: https://patentgrep.com/patent/US20190378993A1

## CPC

- H10K 85/656: {comprising two or more different heteroatoms per ring (H10K85/652 takes precedence)}
- H10K 85/6576: {comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene}
- H10K 10/484: {characterised by the channel regions}
- H10K 85/657: {Polycyclic condensed heteroaromatic hydrocarbons}
- H10K 71/40: Thermal treatment, e.g. annealing in the presence of a solvent vapour
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

The present specification relates to an organic transistor including: a source electrode; a drain electrode; a gate electrode; an insulating layer; and an organic semiconductor layer having one or more layers, in which one or more layers of the organic semiconductor layer include a compound represented by Formula 1.

## Claims

### Claim 1

An organic transistor comprising:
a source electrode;
a drain electrode;
a gate electrode;
an organic semiconductor layer comprising one or more layers; and
an insulating layer between the gate electrode and the organic semiconductor layer,
wherein the one or more layers of the organic semiconductor layer comprise a compound of Formula 1:
wherein:
Ra and Rb are the same as or different from each other, and are each independently a group which serves as an electron acceptor;
Y1 to Y5 are the same as or different from each other, and are each independently CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te;
Y6 and Y7 are different from each other, and are each independently a direct bond, CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te;
a is 0 or 1;
when a is 0, Y6 is a direct bond, and Y7 is CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te;
when a is 1, Y7 is a direct bond, and Y6 is CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te;
n and m are each an integer from 0 to 5;
when n and m are each 2 or more, the structures in the parenthesis are the same as or different from each other; and
R1, R2, R11 to R14, R, and R′ are the same as or different from each other, and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group.

### Claim 2 (depends on 1)

The organic transistor of claim 1, wherein the compound of Formula 1 is a compound of Formula 3:
wherein:
Y6 is CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te; and
Ra, Rb, Y1 to Y5, R1, R2, R11 to R14, R, R′, n, and m are the same as those defined in Formula 1.

### Claim 3 (depends on 2)

The organic transistor of claim 2, wherein the compound of Formula 3 is a compound of Formula 1-1:
wherein:
Y6 is CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te; and
Ra, Rb, Y1, R1, R2, R11 to R14, R, and R′ are the same as those defined in Formula 1.

### Claim 4 (depends on 1)

The organic transistor of claim 1, wherein Ra and Rb are the same as or different from each other, and are each any one of the following structures:
wherein:
c is an integer from 1 to 4;
when c is 2 or more, two or more structures in the parenthesis are the same as or different from each other; and
R20 to R23 are the same as or different from each other, and are each independently hydrogen, deuterium, a halogen group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group.

### Claim 5 (depends on 1)

The organic transistor of claim 1, wherein R1 and R2 are hydrogen.

### Claim 6 (depends on 1)

The organic transistor of claim 1, wherein the compound of Formula 1 is a compound of any one of Formulae 1-11 to 1-16:
wherein:
Y6 is CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te;
Y7 is CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te; and
Y1 to Y5, R11 to R14, R, and R′ are the same as those defined in Formula 1.

### Claim 7 (depends on 1)

The organic transistor of claim 1, wherein Y1 to Y5 are S.

### Claim 8 (depends on 1)

The organic transistor of claim 1, wherein the compound of Formula 1 is a compound of any one of structures:

### Claim 9 (depends on 1)

The organic transistor of claim 1, wherein the compound of Formula 1 is a compound of Formula 2:
wherein Y7 is CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te, and
Ra, Rb, Y1, R11, R12, R, and R′ are the same as those defined in Formula 1.

### Claim 10 (depends on 2)

The organic transistor of claim 2, wherein the compound of Formula 3 is a compound of Formula 1-2:
wherein:
Y6 is CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te; and
Ra, Rb, Y1 to Y5, R1, R2, R11 to R14, R, and R′ are the same as those defined in Formula 1.