Optoelectronic device and electronic apparatus including the same

Patent metadata

Field	Value
Publication number	US-2025143175-A1
Application number	US-202418774780-A
Country	US
Kind code	A1
Filing date	Jul 16, 2024
Priority date	Oct 27, 2023
Publication date	May 1, 2025
Grant date	—

Abstract

An optoelectronic device includes a first electrode, a second electrode facing the first electrode, and a photoactive layer between the first electrode and the second electrode, where the photoactive layer may include an acceptor satisfying Expression 1 and a donor having a maximum absorption wavelength of about 600 nm to about 750 nm, and Expression 2 may be satisfied:

3
⁢

eV

≤

E
LUMO
A

-

E
HOMO
A

≤

4
⁢

eV

Expression
⁢

1

0.05
≤

(

E
LUMO
D

-

E
LUMO
A

)

/

(

E
LUMO
D

-

E
HOMO
D

)

≤

0.5
.

Expression
⁢

2

First claim

What is claimed is:

1 . An optoelectronic device comprising:
a first electrode; a second electrode facing the first electrode; and a photoactive layer between the first electrode and the second electrode, wherein the photoactive layer comprises an acceptor satisfying Expression 1 and a donor having a maximum absorption wavelength of about 600 nm to about 750 nm, and Expression 2 is satisfied:

3
⁢

eV

≤

E
LUMO
A

-

E
HOMO
A

≤

4
⁢

eV

Expression
⁢

1

0.05
≤

(

E
LUMO
D

-

E
LUMO
A

)

/

(

E
LUMO
D

-

E
HOMO
D

)

≤
0.5

Expression
⁢

2

in Expressions 1 and 2,
E D LUMO representing a lowest unoccupied molecular orbital (LUMO) energy level of the donor,
E D HOMO representing a highest occupied molecular orbital (HOMO) energy level of the donor,
E A LUMO representing a LUMO energy level of the acceptor, and
E A HOMO representing a HOMO energy level of the acceptor.

2 . The optoelectronic device of claim 1 , wherein the donor satisfies Expression 3:

1.

eV

≤

E
LUMO
D

-

E
HOMO
D

≤

2.5

eV

Expression
⁢

3

in Expression 3,
E D LUMO and E D HOMO each being the same as described in Expression 2.

3 . The optoelectronic device of claim 1 , wherein Expression 4 is further satisfied:

E
LUMO
A

≤

E
LUMO
D

Expression
⁢

4

in Expression 4,
E D LUMO and E A LUMO each being the same as described in Expressions 1 and 2.

4 . The optoelectronic device of claim 1 , wherein Expression 5 is further satisfied:

E
HOMO
A

≤

E
HOMO
D

Expression
⁢

5

in Expression 5,
E D HOMO and E A HOMO each being the same as described in Expressions 1 and 2.

5 . The optoelectronic device of claim 1 , wherein the acceptor does not comprise a fullerene-based compound.

6 . The optoelectronic device of claim 1 , wherein the acceptor does not comprise a 5-membered ring.

7 . The optoelectronic device of claim 1 , wherein the acceptor is transparent in a visible light region.

8 . The optoelectronic device of claim 1 , wherein the acceptor is represented by Formula 1:

wherein, in Formula 1,
X 1 to X 4 are each independently O, S, or Se,
Z 1 is O or N(R 5 ),
Z 2 is O or N(R 6 ),
R 1 to R 6 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C 1 -C 60 alkyl group unsubstituted or substituted with at least one R 10a , a C 2 -C 60 alkenyl group unsubstituted or substituted with at least one R 10a , a C 2 -C 60 alkynyl group unsubstituted or substituted with at least one R 10a , a C 1 -C 60 alkoxy group unsubstituted or substituted with at least one R 10a , a C 3 -C 60 carbocyclic group unsubstituted or substituted with at least one R 10a , a C 1 -C 60 heterocyclic group unsubstituted or substituted with at least one R 10a , a C 6 -C 60 aryloxy group unsubstituted or substituted with at least one R 10a , a C 6 -C 60 arylthio group unsubstituted or substituted with at least one R 10a , a C 7 -C 60 arylalkyl group unsub

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Seran
• Choi Minsoo
• Kim Hoilim
• Baek Seungin
• Yoo Dongsun
• Yoon Seokgyu
• Jung Jinsoo
• Jung Hyejin
• Choi Youngeun

Classifications

• H10W90/00

  Package configurations · CPC title

• H10K2101/40

  Interrelation of parameters between multiple constituent active layers or sublayers, e.g. HOMO values in adjacent layers · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K30/20

  comprising organic-organic junctions, e.g. donor-acceptor junctions · CPC title