Patent ID: 11895855
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A light-emitting device comprising:
a first electrode;
a second electrode facing the first electrode;
an emission layer disposed between the first electrode and the second electrode; and
a first charge transport layer disposed between the first electrode and the emission layer,
a second charge transport layer disposed between the emission layer and the second electrode,
wherein a band gap energy of the emission layer and a band gap energy of the first charge transport layer are different from each other,
wherein the band gap energy of the emission layer and a band gap energy of the second charge transport layer are different from each other,
the emission layer comprises a first perovskite compound, wherein the first perovskite compound and the second perovskite compound are different from each other; and
the first charge transport layer comprises a second perovskite compound,
wherein the band gap energy of the emission layer is less than the band gap energy of the first charge transport layer.