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US 2025/0051177 A1Published application
Electron transport composition, light-emitting element manufactured using the same, and method for manufacturing the light-emitting element
AssigneeSamsung Display Co., Ltd.
InventorsJungho JO, SEHUN KIM, WON-JUN PARK, CHUL SOON PARK, JONGWOO SHIN, Chungman YU
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Abstract
An electronic transport composition including inorganic particles (each) represented by Formula 1, and a solvent represented by Formula 2, and when the electron transport composition is applied to a light-emitting element, luminous efficiency characteristics and element lifespan characteristics may be improved. Zn1-xMxO Formula 1 R1—O—(R2—O)n—R3 Formula 2
Claims20
An electron transport composition comprising:
- an inorganic particle represented by Formula 1;
- and
- a solvent represented by Formula 2:
- Zn1-xMxO Formula 1
- wherein, in Formula 1,
- M is Sn, Cu or Ni, and
- X satisfies 0<x<1,
- R1—O—(R2—O)n—R3 Formula 2
- wherein, in Formula 2,
- R1 is a hydrogen atom, or a deuterium atom,
- R2 is a substituted or unsubstituted alkylene group having 1 to 60 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 10 ring-forming carbon atoms, a substituted or unsubstituted heterocycloalkylene group having 2 to 10 ring-forming carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 30 ring-forming carbon atoms,
- R3 is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring-forming carbon atoms, a substituted or unsubstituted heterocycloalkyl group having 2 to 10 ring-forming carbon atoms, a substituted or unsubstituted silyl group, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, and
- n is an integer of 1 to 5.
10 more elements
A method for manufacturing a light-emitting element, the method comprising:
- applying a hole transport region on a first electrode;
- applying an emission layer on the hole transport region;
- applying an electron transport region on the emission layer;
- and
- applying a second electrode on the electron transport region,
- wherein, the applying of the electron transport region comprises:
- preparing an electron transport composition comprising inorganic particles and a solvent;
- applying a preliminary electron transport region by applying the electron transport composition onto the emission layer;
- and
- performing a heat treatment of the preliminary electron transport region at a first temperature,
- the inorganic particles are represented by Formula 1, and
- the solvent is represented by Formula 2:
- Zn1-xMxO Formula 1
- wherein, in Formula 1,
- M is Sn, Cu, or Ni, and
- X satisfies 0<x<1,
- R1—O—(R2—O)n—R3 Formula 2
- wherein, in Formula 2,
- R1 is a hydrogen atom, or a deuterium atom,
- R2 is a substituted or unsubstituted alkylene group having 1 to 60 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 10 ring-forming carbon atoms, a substituted or unsubstituted heterocycloalkylene group having 2 to 10 ring-forming carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 30 ring-forming carbon atoms,
- R3 is a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring-forming carbon atoms, a substituted or unsubstituted heterocycloalkyl group having 2 to 10 ring-forming carbon atoms, a substituted or unsubstituted silyl group, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, and
- n is an integer of 1 to 5.
19 more elements
A light-emitting element comprising:
- a first electrode;
- a hole transport region on the first electrode;
- an emission layer on the hole transport region;
- an electron transport region on the emission layer;
- and
- a second electrode on the electron transport region,
- wherein the electron transport region comprises an inorganic particle represented by Formula 1:
- Zn1-xMxO Formula 1
- where, in Formula 1,
- M is Sn, Cu, or Ni, and
- x satisfies 0<x<0.2.
8 more elements
Dependencies are inferred from the claim text.