Quantum dots, quantum dot-polymer composite, and electronic device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJihyun Min, Eun Joo Jang, Yong Wook Kim
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Abstract
A quantum dot, a quantum dot-polymer composite, and an electronic device including the same. The quantum dot includes a core including a first semiconductor nanocrystal; a first shell including a second semiconductor nanocrystal including a Group III-VI compound on the core; and a second shell including a third semiconductor nanocrystal having a composition different from that of the second semiconductor nanocrystal on the first shell; wherein one of the first semiconductor nanocrystal and the third semiconductor nanocrystal includes a Group III-V compound.
Claims40
A quantum dot, comprising
- a core comprising a first semiconductor nanocrystal comprising a Group III-V compound;
- a first shell comprising a second semiconductor nanocrystal comprising a Group III-VI compound disposed on the core;
- and
- a second shell comprising a plurality of layers on the first shell;
- wherein the plurality of layers comprises a third semiconductor nanocrystal comprising a first Group II-VI compound and a fourth semiconductor nanocrystal comprising a second Group II-VI compound, wherein the first Group II-VI compound is different from the second Group II-VI compound.
A quantum dot-polymer composite, comprising
- a polymer matrix;
- and
- a plurality of quantum dots dispersed in the polymer matrix,
- wherein the plurality of quantum dots comprise a quantum dot comprising
- a core comprising a first semiconductor nanocrystal comprising a Group III-V compound;
- a first shell comprising a second semiconductor nanocrystal comprising a Group III-VI compound disposed on the core;
- and
- a second shell comprising a plurality of layers on the first shell;
- wherein the plurality of layers comprises a third semiconductor nanocrystal comprising a first Group II-VI compound and a fourth semiconductor nanocrystal comprising a second Group II-VI compound, wherein the first Group II-VI compound is different from the second Group II-VI compound.
An electronic device, comprising
- a first electrode;
- a second electrode facing each other;
- and
- an active layer located between the first electrode and the second electrode;
- wherein the active layer comprises a quantum dot comprising
- a core comprising a first semiconductor nanocrystal comprising a Group III-V compound;
- a first shell comprising a second semiconductor nanocrystal comprising a Group III-VI compound disposed on the core;
- and
- a second shell comprising a plurality of layers on the first shell;
- wherein the plurality of layers comprises a third semiconductor nanocrystal comprising a first Group II-VI compound and a fourth semiconductor nanocrystal comprising a second Group II-VI compound, wherein the first Group II-VI compound is different from the second Group II-VI compound.
Dependencies are inferred from the claim text.