Title:
COMPOSITE MATERIAL AND QUANTUM DOT LIGHT EMITTING DIODE
Document Type and Number:
WIPO Patent Application WO/2020/048527
Kind Code:
A1
Abstract:
Provided are a composite material and a quantum dot light emitting diode. The quantum dot light emitting diode comprises: an anode, a cathode, and a quantum dot light emitting layer disposed between the anode and the cathode. The quantum dot light emitting layer comprises a first quantum dot light emitting layer; the material for the first quantum dot light emitting layer is a composite material. The composite material comprises: light emitting quantum dots, and halogen ligands and oil-soluble organic ligands bound on the surface of the light emitting quantum dots. Compared with existing oil-soluble composite materials the surfaces of which are merely oil-soluble organic ligands, in the oil-soluble composite material, the halogen ligands can improve the electron transport property of quantum dots, the transport rate of a carrier in a light emitting layer is improved, so that the electron transport rate and hole transport rate in a light emitting layer of a device are balanced, the light emitting efficiency of the device is improved, the working voltage is reduced, and the service life of the device is prolonged.
Inventors:
QIN HUIJUN (CN)
Application Number:
PCT/CN2019/104735
Publication Date:
March 12, 2020
Filing Date:
September 06, 2019
Export Citation:
Assignee:
TCL CORP (CN)
International Classes:
B82Y40/00; C09K11/08; C09K11/54; C09K11/88; H01L33/26; H01L51/50
Foreign References:
| CN106753333A | 2017-05-31 | |||
| CN106531860A | 2017-03-22 | |||
| CN106601925A | 2017-04-26 | |||
| CN107216869A | 2017-09-29 | |||
| CN101191052A | 2008-06-04 | |||
| CN106701076A | 2017-05-24 | |||
| CN107236536A | 2017-10-10 | |||
| CN107760307A | 2018-03-06 | |||
| CN108239535A | 2018-07-03 | |||
| CN107098324A | 2017-08-29 |
Attorney, Agent or Firm:
JOHNSON INTELLECTUAL PROPERTY AGENCY (SHENZHEN) (CN)
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