Title:
LIGHT-EMITTING DEVICE THAT EMITS GREEN LIGHT, AND LIGHT-EMITTING SUBSTRATE AND LIGHT-EMITTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/205947
Kind Code:
A1
Abstract:
A light-emitting device that emits green light. The light-emitting device comprises: a first electrode and a second electrode, which are arranged in a stacked manner, and a light-emitting layer, which is arranged between the first electrode and the second electrode, wherein the light-emitting layer comprises a first host material and a second host material; the first host material and the second host material form an exciplex; and the energy level difference between the LUMO energy level of the first host material and the LUMO energy level of the second host material is greater than or equal to 0.5 eV; and under the same test condition, the difference between the order of magnitude of the numerical value of the hole mobility of the first host material and the order of magnitude of the numerical value of the electron mobility of the second host material is greater than or equal to 1.
Inventors:
MA KUN (CN)
GAO RONGRONG (CN)
WANG DAN (CN)
GAO RONGRONG (CN)
WANG DAN (CN)
Application Number:
PCT/CN2021/132200
Publication Date:
October 06, 2022
Filing Date:
November 22, 2021
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
H01L51/50; H01L27/32
Foreign References:
| CN108232025A | 2018-06-29 | |||
| CN112271262A | 2021-01-26 | |||
| CN110993805A | 2020-04-10 | |||
| CN106803540A | 2017-06-06 | |||
| CN109713151A | 2019-05-03 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)
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