Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Samsung Sdi Co., Inc.

Seon-Yeong Kim

Soo Kyung Kwon

Yong Wook Kim

Ji-Yeong Kim

Eun Joo Jang

Sungwoo Hwang

Jihyun Min

Hyo Sook Jang

Shin Ae Jun

Tae Gon Kim

Yuho Won

Shang Hyeun Park

Nayoun Won

Garam Park

Jooyeon Ahn

Seonmyeong Choi

A cadmium free quantum dot including a core that includes a first semiconductor nanocrystal including zinc, tellurium, and selenium, and a semiconductor nanocrystal shell that is disposed on the core and includes a zinc chalcogenide, wherein the quantum dot further includes magnesium and the mole ratio of Te:Se is greater than or equal to about 0.1:1 in the quantum dot; a production method thereof; and an electronic device including the same.

Quantum dot, production method thereof, and electronic device including the same

Provided is a quantum dot having a core-shell structure, wherein a core includes a first semiconductor nanocrystal including zinc, tellurium, and selenium, and a semiconductor nanocrystal shell is disposed on the core and includes a Group II-VI compound, wherein the quantum dot further includes phosphorus and fluorine, and the quantum dot does not include cadmium.

A cadmium free quantum dot or a population thereof or a device including the same, wherein the cadmium free quantum dot includes a core (or a semiconductor nanocrystal particle) including a first semiconductor including a Group IIB-VI compound and a shell (or a coating) disposed on the core (or the semiconductor nanocrystal particle) including a Group IIB-V compound and exhibits a quantum efficiency of about 60% or higher.

Quantum dots and device including the same

A quantum dot including a core and a shell disposed on an outer surface of the core. The core includes a first semiconductor nanocrystal including a Group II-VI compound. The shell includes a second semiconductor nanocrystal. An effective mass of the second semiconductor nanocrystal is about 0.5 times to about 2.0 times an effective mass of the first semiconductor nanocrystal and the quantum dot does not include cadmium, lead, mercury, or a combination thereof.

Quantum dots, and electronic devices and electronic equipments including same

A cadmium free quantum dot includes zinc, tellurium, and selenium, and lithium. A full width at half maximum of a maximum luminescent peak of the cadmium free quantum dot is less than or equal to about 50 nanometers and the cadmium free quantum dot has a quantum efficiency of greater than 1%.

Cadmium free quantum dot including lithium, production method thereof, and electronic device including the same

A quantum dot including a semiconductor nanocrystal core and a semiconductor nanocrystal shell disposed on the core and does not include cadmium, wherein the core includes a Group III-V compound, the quantum dot has a maximum photoluminescence peak in a green light wavelength region, a full width at half maximum (FWHM) of the maximum photoluminescence peak is less than about 50 nanometers (nm), and a difference between a wavelength of the maximum photoluminescence peak and a first absorption peak wavelength of the quantum dot is less than or equal to about 25 nanometers, and a production method thereof.

Quantum dots, production method thereof, and composite and electronic device including the same

A quantum dot including a core including a first semiconductor nanocrystal including zinc, selenium, and tellurium, and a semiconductor nanocrystal shell disposed on the core, the semiconductor nanocrystal shell including zinc, and selenium, sulfur, or a combination thereof, wherein the quantum dot does not include cadmium, a mole ratio of tellurium relative to selenium in the first semiconductor nanocrystal is greater than about 1:1, a mole ratio of a sum of selenium and sulfur relative to in the quantum dot is greater than about 1:1, a wavelength of a maximum emission peak of the quantum dot is in a range of about 500 nanometers (nm) to about 550 nm, and the quantum dot has quantum efficiency (QY) of greater than or equal to about 30%, a quantum dot-polymer composite including the quantum dot, a display device including the quantum dot-polymer composite, and an electroluminescent device including the quantum dot.

Core shell quantum dot, production method thereof, and electronic device including the same

A quantum dot composite that includes a matrix; and

Quantum dot composite, quantum dot, device including the same

A core-shell quantum dot comprising zinc, a core comprising a first semiconductor nanocrystal material; and a semiconductor nanocrystal shell disposed on the core, wherein the core-shell quantum dot does not comprise cadmium, and does comprise zinc, tellurium, selenium, and aluminum.

Zinc tellurium selenium based quantum dot

A quantum dot comprising zinc, tellurium, and selenium and not comprising cadmium, wherein a maximum luminescent peak of the quantum dot is present in a wavelength range of greater than about 470 nanometers (nm) and a quantum efficiency of the quantum dot is greater than or equal to about 10%, and wherein the quantum dot comprises a core comprising a first semiconductor nanocrystal and a semiconductor nanocrystal shell disposed on the core.

A core shell quantum dot including a core including a first semiconductor nanocrystal and including zinc, tellurium, and selenium and a semiconductor nanocrystal shell disposed on the core and including a zinc chalcogenide, a method of manufacture thereof, and a device including the same are disclosed, wherein the core shell quantum dot does not include cadmium, lead, mercury, or a combination thereof, wherein in an X-ray photoelectron spectrum of the quantum dot, a peak area for Te oxide to a peak area for Te3das an area percentage is less than or equal to about 25%.

A core-shell quantum dot including a core including a first semiconductor nanocrystal, the first semiconductor nanocrystal including zinc, tellurium, and selenium and a semiconductor nanocrystal shell disposed on the core, the semiconductor nanocrystal shell including zinc and selenium, sulfur, or a combination thereof and a production thereof are disclosed, wherein the core-shell quantum dot does not include cadmium, lead, mercury, or a combination thereof, wherein the core-shell quantum dot(s) includes chlorine, wherein in the core-shell quantum dot, a mole ratio of chlorine with respect to tellurium is greater than or equal to about 0.01:1 and wherein a quantum efficiency of the core-shell quantum dot is greater than or equal to about 10%.

Growing community of inventors

Suwon-si, South Korea

Seon-Yeong Kim