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.

A quantum dot-polymer composite including a polymer matrix; and core-shell quantum dots dispersed in the polymer matrix, wherein the core-shell quantum dots include a semiconductor nanocrystal core including indium, zinc, and phosphorus and a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the shell including zinc, selenium, and sulfur. The core-shell quantum dots do not include cadmium, the core-shell quantum dots are configured to emit green light, the core-shell quantum dots have a mole ratio of phosphorus to indium of greater than or equal to about 0.75, and the core-shell quantum dots have a mole ratio of zinc to indium of greater than or equal to about 35, and a method of producing the core-shell quantum dots, and a display device including a light emitting element that includes the quantum dot-polymer composite.

Provided are a quantum dot, a method of manufacturing the quantum dot, and an electronic device including the quantum dot. The quantum dot includes a core including a first semiconductor nanocrystal and a doping metal. The first semiconductor nanocrystal includes a group II element, a group III element, and a group V element. The quantum dot has a narrower full width at half maximum (FWHM) and superior quantum efficiency, and manufactured in a simple manner.

Provided are a quantum dot, a method of manufacturing the quantum dot, and an electronic device including the quantum dot. The quantum dot includes a core including a first semiconductor nanocrystal and a doping metal. The first semiconductor nanocrystal includes a group II element, a group III element, and a group V element. The quantum dot has a narrower full width at half maximum (FWHM) and superior quantum efficiency, and manufactured in a simple manner.

An ink composition is provided. The composition includes a binder material and at least one narrow band emission phosphor being uniformly dispersed throughout the composition, wherein the narrow band emission phosphor has a D50 particle size from about 0.1 μm to about 15 μm and is selected from the group consisting of a green-emitting U.sup.6+-containing phosphor, a green-emitting Mn.sup.2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn.sup.4+, and a mixture thereof. A device is also provided.

An ink composition is provided. The composition includes a binder material and at least one narrow band emission phosphor being uniformly dispersed throughout the composition, wherein the narrow band emission phosphor has a D50 particle size from about 0.1 μm to about 15 μm and is selected from the group consisting of a green-emitting U.sup.6+-containing phosphor, a green-emitting Mn.sup.2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn.sup.4+, and a mixture thereof. A device is also provided.

A color conversion film is provided. The film includes at least one narrow band emission phosphor dispersed within a binder matrix, wherein the narrow band emission phosphor has a D50 particle size from about 0.1 μm to about 15 μm and is selected from the group consisting of a green-emitting U.sup.6+-containing phosphor, a green-emitting Mn.sup.2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn.sup.4+, and a mixture thereof. A device is also provided.

A color conversion film is provided. The film includes at least one narrow band emission phosphor dispersed within a binder matrix, wherein the narrow band emission phosphor has a D50 particle size from about 0.1 μm to about 15 μm and is selected from the group consisting of a green-emitting U.sup.6+-containing phosphor, a green-emitting Mn.sup.2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn.sup.4+, and a mixture thereof. A device is also provided.

In the present disclosure embodiments, a phosphate phosphor including an activation center of trivalent chromium and a light emitting device are provided. The light emitting device includes a light source and the above mentioned phosphate phosphor, such that the phosphate phosphor is excited by the light source and emits a wide spectrum of the infrared light. The light emitting device with wide emission spectrum of the infrared light may be widely applied in detecting devices.

In the present disclosure embodiments, a phosphate phosphor including an activation center of trivalent chromium and a light emitting device are provided. The light emitting device includes a light source and the above mentioned phosphate phosphor, such that the phosphate phosphor is excited by the light source and emits a wide spectrum of the infrared light. The light emitting device with wide emission spectrum of the infrared light may be widely applied in detecting devices.