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US 12,723,194 B2Granted
Quantum dot composition, light emitting element and display device including the same
AssigneeSamsung Display Co., Ltd.
InventorsYunku Jung, Minki Nam, Hyunmi Doh, Yunhyuk Ko, Sungwoon Kim, Jaehoon Kim, Myoungjin Park, Jae Hong Park, Junwoo Park
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Abstract
A quantum dot composition includes a quantum dot, a ligand to bind to a surface of the quantum dot, an additive having an amine group, and a precursor comprising an organometallic compound, the composition forming a modified quantum dot having a reformed surface characteristic. A light emitting element including the modified quantum dot may have improved lifespan, luminous efficiency, and material stability.
Claims4
A light emitting element, comprising:
- a first electrode;
- a hole transport region on the first electrode;
- a light emission layer on the hole transport region, and comprising a modified quantum dot, the modified quantum dot comprising:
- a quantum dot comprising a core and a shell surrounding the core, and
- a metal compound comprising a metal oxide and/or a metal sulfide, the metal compound being discontinuously bound to the outermost surface of the quantum dot shell at separate portions of the outermost surface of the quantum dot shell;
- an electron transport region on the light emission layer;
- and
- a second electrode on the electron transport region.
5 more elements
Dependencies are inferred from the claim text.