Light-emitting device, manufacturing method thereof, and display device
AssigneeBoe Technology Group Co., Ltd.
InventorsHaiyan SUN, Xiaojin ZHANG
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Abstract
The present disclosure provides a light-emitting device, a manufacturing method thereof, and a display device. The light-emitting device includes an anode, a cathode, a light-emitting layer between the anode and the cathode, and a hole transport layer between the anode and the light-emitting layer. The hole transport layer includes a first compound and a second compound, an absolute value of a difference between an energy level of the highest occupied molecular orbital of the first compound and an energy level of the highest occupied molecular orbital of the second compound is greater than or equal to 0.2 eV, and a hole mobility of the second compound is greater than or equal to 10−4 cm2/Vs.
Claims18
A light-emitting device comprising:
- an anode;
- a cathode;
- a light-emitting layer between the anode and the cathode;
- and
- a hole transport layer between the anode and the light-emitting layer,
- wherein the hole transport layer comprises a first compound and a second compound, and
- wherein an absolute value of a difference between an energy level of the highest occupied molecular orbital of the first compound and an energy level of the highest occupied molecular orbital of the second compound is greater than or equal to 0.2 eV,
- wherein a hole mobility of the second compound is greater than or equal to 10−4 cm2/Vs.
A light-emitting device comprising:
- an anode;
- a cathode;
- a light-emitting layer between the anode and the cathode;
- and
- a hole transport layer between the anode and the light-emitting layer,
- wherein the hole transport layer comprises a first compound and a second compound,
- an absolute value of an energy level of the highest occupied molecular orbital of the second compound is greater than or equal to 5 eV and less than or equal to 6.5 eV, and
- an average surface roughness of the hole transport layer is less than 5 nm.
A light-emitting device comprising:
- an anode;
- a cathode;
- a light-emitting layer between the anode and the cathode;
- and
- a hole transport layer between the anode and the light-emitting layer,
- wherein the hole transport layer comprises a first compound and a second compound, and
- an absolute value of an energy level of the highest occupied molecular orbital of the second compound is greater than or equal to 5 eV and less than or equal to 6.5 eV, and
- wherein the light-emitting device further comprises an electron transport layer, a material of the electron transport layer comprises metal oxide, and the metal oxide comprises at least two metals.
Dependencies are inferred from the claim text.