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US 11,895,856 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.
Claims8
A quantum dot composition, comprising:
- a quantum dot;
- an additive comprising an amine group;
- and
- a precursor comprising an organometallic compound being at least one selected from *-M-O(O)—C—R1, *-M-S(S)—C—R1, *-M-O(O)—C—NH—R1, *-M-S(S)—C—NH—R1, *-M-O(O)—C—N—R1, *-M-S(S)—C—N—R1, *-M-O(O)—C—O—R1, *-M-S(S)—C—O—R1, *-M-O(O)—[C(O)O—C(O)O]n, and *-M-S(S)—[C(O)O—C(O)O]n,
- wherein, in the precursor,
- R1 is an alkyl group having 1 to 20 carbon atoms,
- n is an integer of 1 to 10,
- M comprises at least one selected from Cd, Zn, Ga, Pd, Cu, Ag, Au, Rh, Ir, Ru, and Os, and
- “*-” refers to a position to be connected.
6 more elements
Dependencies are inferred from the claim text.